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Full vulnerability report · 2026
CVE-2026-5435High confidence

Potential buffer overflow in ns_sprintrrf TSIG handling path

The GNU C Library · glibc

7.3HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

1 package state
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archiveglibcVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.2.39-0ubuntu8.8Canonical record ↗Source updated 11 Sept 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

2 current
CVE-2026-5435 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityglibc: glibc: Out-of-bounds write via TSIG record processing
23 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • compat-glibc-headers as a component of Red Hat Enterprise Linux 6
  • compat-glibc.src as a component of Red Hat Enterprise Linux 6
  • glibc as a component of Red Hat Enterprise Linux 6
  • glibc-common as a component of Red Hat Enterprise Linux 6
  • glibc-devel as a component of Red Hat Enterprise Linux 6
  • glibc-headers as a component of Red Hat Enterprise Linux 6
  • glibc-static as a component of Red Hat Enterprise Linux 6
  • glibc-utils as a component of Red Hat Enterprise Linux 6
  • glibc.src as a component of Red Hat Enterprise Linux 6
  • nscd as a component of Red Hat Enterprise Linux 6
  • compat-glibc as a component of Red Hat Enterprise Linux 7
  • compat-glibc-headers as a component of Red Hat Enterprise Linux 7
Summary
A flaw was found in glibc, the GNU C Library. Specifically, deprecated functions responsible for printing TSIG (Transaction Signature) records fail to properly manage memory buffers. This oversight can lead to an out-of-bounds write when processing specially crafted TSIG records. An attacker could exploit this to cause a denial of service or potentially execute arbitrary code.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
SSA-082556 · CSAF 2.0 · revision 7 · interimSiemens ProductCERTSSA-082556: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.5
5 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.5 < V3.1.6
  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.5 < V3.1.6
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.5 < V3.1.6
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= V3.1.5 < V3.1.6
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= V3.1.5 < V3.1.6
Summary
The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.
Remediation
Update to V3.1.6 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-26036

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

What

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Out-of-bounds Write → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-787 ↗

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-787
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-3043IBM QRadar SIEM: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen und um beliebigen Programmcode auszuführen.

Official advisory ↗
BSI · German · WID-SEC-2026-1300GNU libc: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um beliebigen Programmcode auszuführen, einen Denial-of-Service-Zustand zu verursachen oder vertrauliche Informationen offenzulegen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260429Security Bulletin 29 Apr 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 29 Apr 2026, published on 29 April 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1125Multiples vulnérabilités dans les produits VMware

ERecord?id=CVE-2026-35469 Référence CVE CVE-2026-3783 https://www.cve.org/CVERecord?id=CVE-2026-3783 Référence CVE CVE-2026-3784 https://www.cve.org/CVERecord?id=CVE-2026-3784 Référence CVE CVE-2026-39822 https://www.cve.org/CVERecord?id=CVE-2026-39822 Référence CVE CVE-2026-41989 https://www.cve.org/CVERecord?id=CVE-2026-41989 Référence CVE CVE-2026-42505 https://www.cve.org/CVERecord?id=CVE-2026-42505 Référence CVE CVE-2026-46600 https://www.cve.org/CVERecord?id=CVE-2026-46600 Référence CVE CVE-2026-4873 https://www.cve.org/CVERecord?id=CVE-2026-4873 Référence CVE CVE-2026-48864 https://www.cve.org/CVERecord?id=CVE-2026-48864 Référence CVE CVE-2026-5435 https://www.cve.org/CVERecord?id=CVE-2026-5435 Référence CVE CVE-2026-54369 https://www.cve.org/CVERecord?id=CVE-2026-54369 Référence CVE CVE-2026-54370 https://www.cve.org/CVERecord?id=CVE-2026-54370 Référence CVE CVE-2026-54572 https://www.cve.org/CVERecord?id=CVE-2026-54572 Référence CVE CVE-2026-5545 https://www.cve.org/CVERecord?id=CVE-2026-5545 Référence CVE CVE-2026-56853 https://www.cve.org/CVERecord?id=CVE-2026-56853 Référence CVE CVE-2026-56858 https://www.cve.org/CVERecord?id=CVE-2026-56858 Référence CVE CVE-2026-56859 https://www.cve.org/CVERecord?id=CVE-2026-56859 Référence CVE CVE-2026-56860 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1094Multiples vulnérabilités dans les produits IBM

d?id=CVE-2026-54275 Référence CVE CVE-2026-54276 https://www.cve.org/CVERecord?id=CVE-2026-54276 Référence CVE CVE-2026-54277 https://www.cve.org/CVERecord?id=CVE-2026-54277 Référence CVE CVE-2026-54278 https://www.cve.org/CVERecord?id=CVE-2026-54278 Référence CVE CVE-2026-54279 https://www.cve.org/CVERecord?id=CVE-2026-54279 Référence CVE CVE-2026-54280 https://www.cve.org/CVERecord?id=CVE-2026-54280 Référence CVE CVE-2026-54282 https://www.cve.org/CVERecord?id=CVE-2026-54282 Référence CVE CVE-2026-54283 https://www.cve.org/CVERecord?id=CVE-2026-54283 Référence CVE CVE-2026-54293 https://www.cve.org/CVERecord?id=CVE-2026-54293 Référence CVE CVE-2026-5435 https://www.cve.org/CVERecord?id=CVE-2026-5435 Référence CVE CVE-2026-54369 https://www.cve.org/CVERecord?id=CVE-2026-54369 Référence CVE CVE-2026-54370 https://www.cve.org/CVERecord?id=CVE-2026-54370 Référence CVE CVE-2026-54475 https://www.cve.org/CVERecord?id=CVE-2026-54475 Référence CVE CVE-2026-5450 https://www.cve.org/CVERecord?id=CVE-2026-5450 Référence CVE CVE-2026-54512 https://www.cve.org/CVERecord?id=CVE-2026-54512 Référence CVE CVE-2026-54513 https://www.cve.org/CVERecord?id=CVE-2026-54513 Référence CVE CVE-2026-54514 https://www.cve.org/CVERecord?id=CVE-2026-54514 Référence CVE CVE-2026-54515 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-013940GNU ProjectのGNU C Libraryにおける境界外書き込みに関する脆弱性

GNU Cライブラリバージョン2.2以降の非推奨関数であるns_printrrf、ns_printrrおよびfp_nqueryは、呼び出し元が指定したバッファ長を強制しません。このため、TSIGレコードを印刷する際に境界外書き込みが発生する可能性があります。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 28 Apr 2026 · Last source change 14 Jul 2026, 12:45 UTC · CWE-787 · Out-of-bounds Write

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-26036
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    compat-glibc-headers as a component of Red Hat Enterprise Linux 6; compat-glibc.src as a component of Red Hat Enterprise Linux 6; glibc as a component of Red Hat Enterprise Linux 6; glibc-common as a component of Red Hat Enterprise Linux 6; glibc-devel as a component of Red Hat Enterprise Linux 6; glibc-headers as a component of Red Hat Enterprise Linux 6; glibc-static as a component of Red Hat Enterprise Linux 6; glibc-utils as a component of Red Hat Enterprise Linux 6; glibc.src as a component of Red Hat Enterprise Linux 6; nscd as a component of Red Hat Enterprise Linux 6; compat-glibc as a component of Red Hat Enterprise Linux 7; compat-glibc-headers as a component of Red Hat Enterprise Linux 7; compat-glibc.src as a component of Red Hat Enterprise Linux 7; glibc as a component of Red Hat Enterprise Linux 7; glibc-common as a component of Red Hat Enterprise Linux 7; glibc-devel as a component of Red Hat Enterprise Linux 7; glibc-headers as a component of Red Hat Enterprise Linux 7; glibc-static as a component of Red Hat Enterprise Linux 7; glibc-utils as a component of Red Hat Enterprise Linux 7; glibc.src as a component of Red Hat Enterprise Linux 7; nscd as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: glibc-benchtests-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-doc-0:2.39-128.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-utils-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 3048 more
    After
    compat-glibc-headers as a component of Red Hat Enterprise Linux 6; compat-glibc.src as a component of Red Hat Enterprise Linux 6; glibc as a component of Red Hat Enterprise Linux 6; glibc-common as a component of Red Hat Enterprise Linux 6; glibc-devel as a component of Red Hat Enterprise Linux 6; glibc-headers as a component of Red Hat Enterprise Linux 6; glibc-static as a component of Red Hat Enterprise Linux 6; glibc-utils as a component of Red Hat Enterprise Linux 6; glibc.src as a component of Red Hat Enterprise Linux 6; nscd as a component of Red Hat Enterprise Linux 6; compat-glibc as a component of Red Hat Enterprise Linux 7; compat-glibc-headers as a component of Red Hat Enterprise Linux 7; compat-glibc.src as a component of Red Hat Enterprise Linux 7; glibc as a component of Red Hat Enterprise Linux 7; glibc-common as a component of Red Hat Enterprise Linux 7; glibc-devel as a component of Red Hat Enterprise Linux 7; glibc-headers as a component of Red Hat Enterprise Linux 7; glibc-static as a component of Red Hat Enterprise Linux 7; glibc-utils as a component of Red Hat Enterprise Linux 7; glibc.src as a component of Red Hat Enterprise Linux 7; nscd as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: glibc-benchtests-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-doc-0:2.39-128.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-utils-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 3048 more
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    compat-glibc-headers as a component of Red Hat Enterprise Linux 6; compat-glibc.src as a component of Red Hat Enterprise Linux 6; glibc as a component of Red Hat Enterprise Linux 6; glibc-common as a component of Red Hat Enterprise Linux 6; glibc-devel as a component of Red Hat Enterprise Linux 6; glibc-headers as a component of Red Hat Enterprise Linux 6; glibc-static as a component of Red Hat Enterprise Linux 6; glibc-utils as a component of Red Hat Enterprise Linux 6; glibc.src as a component of Red Hat Enterprise Linux 6; nscd as a component of Red Hat Enterprise Linux 6; compat-glibc as a component of Red Hat Enterprise Linux 7; compat-glibc-headers as a component of Red Hat Enterprise Linux 7; compat-glibc.src as a component of Red Hat Enterprise Linux 7; glibc as a component of Red Hat Enterprise Linux 7; glibc-common as a component of Red Hat Enterprise Linux 7; glibc-devel as a component of Red Hat Enterprise Linux 7; glibc-headers as a component of Red Hat Enterprise Linux 7; glibc-static as a component of Red Hat Enterprise Linux 7; glibc-utils as a component of Red Hat Enterprise Linux 7; glibc.src as a component of Red Hat Enterprise Linux 7; nscd as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: glibc-benchtests-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-doc-0:2.39-128.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-utils-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 3045 more
    After
    compat-glibc-headers as a component of Red Hat Enterprise Linux 6; compat-glibc.src as a component of Red Hat Enterprise Linux 6; glibc as a component of Red Hat Enterprise Linux 6; glibc-common as a component of Red Hat Enterprise Linux 6; glibc-devel as a component of Red Hat Enterprise Linux 6; glibc-headers as a component of Red Hat Enterprise Linux 6; glibc-static as a component of Red Hat Enterprise Linux 6; glibc-utils as a component of Red Hat Enterprise Linux 6; glibc.src as a component of Red Hat Enterprise Linux 6; nscd as a component of Red Hat Enterprise Linux 6; compat-glibc as a component of Red Hat Enterprise Linux 7; compat-glibc-headers as a component of Red Hat Enterprise Linux 7; compat-glibc.src as a component of Red Hat Enterprise Linux 7; glibc as a component of Red Hat Enterprise Linux 7; glibc-common as a component of Red Hat Enterprise Linux 7; glibc-devel as a component of Red Hat Enterprise Linux 7; glibc-headers as a component of Red Hat Enterprise Linux 7; glibc-static as a component of Red Hat Enterprise Linux 7; glibc-utils as a component of Red Hat Enterprise Linux 7; glibc.src as a component of Red Hat Enterprise Linux 7; nscd as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: glibc-benchtests-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-doc-0:2.39-128.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-utils-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 3048 more
    Red Hat Product Security ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    compat-glibc-headers as a component of Red Hat Enterprise Linux 6; compat-glibc.src as a component of Red Hat Enterprise Linux 6; glibc as a component of Red Hat Enterprise Linux 6; glibc-common as a component of Red Hat Enterprise Linux 6; glibc-devel as a component of Red Hat Enterprise Linux 6; glibc-headers as a component of Red Hat Enterprise Linux 6; glibc-static as a component of Red Hat Enterprise Linux 6; glibc-utils as a component of Red Hat Enterprise Linux 6; glibc.src as a component of Red Hat Enterprise Linux 6; nscd as a component of Red Hat Enterprise Linux 6; compat-glibc as a component of Red Hat Enterprise Linux 7; compat-glibc-headers as a component of Red Hat Enterprise Linux 7; compat-glibc.src as a component of Red Hat Enterprise Linux 7; glibc as a component of Red Hat Enterprise Linux 7; glibc-common as a component of Red Hat Enterprise Linux 7; glibc-devel as a component of Red Hat Enterprise Linux 7; glibc-headers as a component of Red Hat Enterprise Linux 7; glibc-static as a component of Red Hat Enterprise Linux 7; glibc-utils as a component of Red Hat Enterprise Linux 7; glibc.src as a component of Red Hat Enterprise Linux 7; nscd as a component of Red Hat Enterprise Linux 7; rhcos as a component of Red Hat OpenShift Container Platform 4 · Fixed: glibc-benchtests-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-doc-0:2.39-128.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-utils-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 3045 more
    After
    compat-glibc-headers as a component of Red Hat Enterprise Linux 6; compat-glibc.src as a component of Red Hat Enterprise Linux 6; glibc as a component of Red Hat Enterprise Linux 6; glibc-common as a component of Red Hat Enterprise Linux 6; glibc-devel as a component of Red Hat Enterprise Linux 6; glibc-headers as a component of Red Hat Enterprise Linux 6; glibc-static as a component of Red Hat Enterprise Linux 6; glibc-utils as a component of Red Hat Enterprise Linux 6; glibc.src as a component of Red Hat Enterprise Linux 6; nscd as a component of Red Hat Enterprise Linux 6; compat-glibc as a component of Red Hat Enterprise Linux 7; compat-glibc-headers as a component of Red Hat Enterprise Linux 7; compat-glibc.src as a component of Red Hat Enterprise Linux 7; glibc as a component of Red Hat Enterprise Linux 7; glibc-common as a component of Red Hat Enterprise Linux 7; glibc-devel as a component of Red Hat Enterprise Linux 7; glibc-headers as a component of Red Hat Enterprise Linux 7; glibc-static as a component of Red Hat Enterprise Linux 7; glibc-utils as a component of Red Hat Enterprise Linux 7; glibc.src as a component of Red Hat Enterprise Linux 7; nscd as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: glibc-benchtests-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-benchtests-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-common-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-debugsource-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-devel-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-doc-0:2.39-128.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-gconv-extra-debuginfo-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-locale-source-0:2.39-128.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); glibc-utils-0:2.39-128.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 3045 more
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-26036↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-5435 · cve.blacktree.nl