BlackTreeCVE Intelligence
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Full vulnerability report · 2026
CVE-2026-27171High confidence

zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition

zlib · zlib

2.9LowCVSS 3.1
Recommended action
Within 7 days

Low technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityLowOperational priority:Low, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • EPSS is 0.19% for the current model date.

Compensating controls

  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs zlib zlib and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

Alpine, Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

8 package states
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.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.23v3.23 · mainzlibVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.1.3.2-r0Alpine Security Database ↗Source updated 3 Oct 2026
Alpine v3.22v3.22 · mainzlibVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.1.3.2-r0Alpine Security Database ↗Source updated 3 Oct 2026
Alpine v3.21v3.21 · mainzlibVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.1.3.2-r0Alpine Security Database ↗Source updated 3 Oct 2026
Debian trixietrixie · sourcezlibAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcezlibAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcezlibVendor fix publishedDebian records a fixed source-package version for this release.1:1.3.dfsg+really1.3.2-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcezlibVendor fix publishedDebian records a fixed source-package version for this release.1:1.3.dfsg+really1.3.2-1Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivezlibVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.1:1.3.dfsg-3.1ubuntu2.2Canonical Ubuntu Security ↗Source updated 5 Oct 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.

1 current
CVE-2026-27171 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityzlib: zlib: Denial of Service via infinite loop in CRC32 combine functions
316 known affected

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

  • openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
  • java-1.8.0-openjdk-portable.src as a component of Red Hat build of OpenJDK 1.8
  • java-11-openjdk-portable.src as a component of Red Hat build of OpenJDK 11 ELS
  • java-11-openjdk.src as a component of Red Hat build of OpenJDK 11 ELS
  • java-17-openjdk-portable.src as a component of Red Hat build of OpenJDK 17
  • java-21-openjdk-portable.src as a component of Red Hat build of OpenJDK 21
  • java-25-openjdk-portable.src as a component of Red Hat build of OpenJDK 25
Summary
A flaw was found in zlib. An attacker providing specially crafted input to the `crc32_combine64` or `crc32_combine_gen64` functions could trigger an infinite loop within the `x2nmodp` function. This leads to excessive CPU consumption, which can result in a Denial of Service (DoS) for the affected system.
Remediation
Fix deferred
Optional official sources

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

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2026-8063

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

Low technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

What

zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

Why

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

How

An attacker operating through local access 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

zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

Why

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

How

An attacker operating through local access 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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
local access → Improper Validation of Specified Quantity in Input → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
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-1284 ↗

CWE-1284: Improper Validation of Specified Quantity in Input. The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

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

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

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.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.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
UnauthenticatedCWE-1284Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-2026-2189Dell PowerProtect Data Domain: Mehrere Schwachstellen

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

Official advisory ↗
BSI · German · WID-SEC-2026-1032IBM Tivoli Network Manager: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM Tivoli Network Manager ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2026-0435zlib: Schwachstelle ermöglicht Denial of Service

Ein lokaler Angreifer kann eine Schwachstelle in zlib ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260225Security Bulletin 25 Feb 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 25 Feb 2026, published on 25 February 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0933Multiples vulnérabilités dans les produits IBM

cord?id=CVE-2026-2005 Référence CVE CVE-2026-2006 https://www.cve.org/CVERecord?id=CVE-2026-2006 Référence CVE CVE-2026-22731 https://www.cve.org/CVERecord?id=CVE-2026-22731 Référence CVE CVE-2026-22732 https://www.cve.org/CVERecord?id=CVE-2026-22732 Référence CVE CVE-2026-22733 https://www.cve.org/CVERecord?id=CVE-2026-22733 Référence CVE CVE-2026-24281 https://www.cve.org/CVERecord?id=CVE-2026-24281 Référence CVE CVE-2026-24308 https://www.cve.org/CVERecord?id=CVE-2026-24308 Référence CVE CVE-2026-24880 https://www.cve.org/CVERecord?id=CVE-2026-24880 Référence CVE CVE-2026-25854 https://www.cve.org/CVERecord?id=CVE-2026-25854 Référence CVE CVE-2026-27171 https://www.cve.org/CVERecord?id=CVE-2026-27171 Référence CVE CVE-2026-27727 https://www.cve.org/CVERecord?id=CVE-2026-27727 Référence CVE CVE-2026-27830 https://www.cve.org/CVERecord?id=CVE-2026-27830 Référence CVE CVE-2026-27970 https://www.cve.org/CVERecord?id=CVE-2026-27970 Référence CVE CVE-2026-29145 https://www.cve.org/CVERecord?id=CVE-2026-29145 Référence CVE CVE-2026-29146 https://www.cve.org/CVERecord?id=CVE-2026-29146 Référence CVE CVE-2026-32635 https://www.cve.org/CVERecord?id=CVE-2026-32635 Référence CVE CVE-2026-33227 https://www.cve.org/CVERecord?id=CVE-2026-33227 Référence CVE CVE-2026-33244 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0627Multiples vulnérabilités dans les produits Splunk

d?id=CVE-2026-27024 Référence CVE CVE-2026-27025 https://www.cve.org/CVERecord?id=CVE-2026-27025 Référence CVE CVE-2026-27026 https://www.cve.org/CVERecord?id=CVE-2026-27026 Référence CVE CVE-2026-27139 https://www.cve.org/CVERecord?id=CVE-2026-27139 Référence CVE CVE-2026-27140 https://www.cve.org/CVERecord?id=CVE-2026-27140 Référence CVE CVE-2026-27141 https://www.cve.org/CVERecord?id=CVE-2026-27141 Référence CVE CVE-2026-27142 https://www.cve.org/CVERecord?id=CVE-2026-27142 Référence CVE CVE-2026-27143 https://www.cve.org/CVERecord?id=CVE-2026-27143 Référence CVE CVE-2026-27144 https://www.cve.org/CVERecord?id=CVE-2026-27144 Référence CVE CVE-2026-27171 https://www.cve.org/CVERecord?id=CVE-2026-27171 Référence CVE CVE-2026-27456 https://www.cve.org/CVERecord?id=CVE-2026-27456 Référence CVE CVE-2026-27628 https://www.cve.org/CVERecord?id=CVE-2026-27628 Référence CVE CVE-2026-27699 https://www.cve.org/CVERecord?id=CVE-2026-27699 Référence CVE CVE-2026-27888 https://www.cve.org/CVERecord?id=CVE-2026-27888 Référence CVE CVE-2026-28351 https://www.cve.org/CVERecord?id=CVE-2026-28351 Référence CVE CVE-2026-28387 https://www.cve.org/CVERecord?id=CVE-2026-28387 Référence CVE CVE-2026-28388 https://www.cve.org/CVERecord?id=CVE-2026-28388 Référence CVE CVE-2026-28389 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0326Multiples vulnérabilités dans les produits VMware

d?id=CVE-2026-26269 Référence CVE CVE-2026-26958 https://www.cve.org/CVERecord?id=CVE-2026-26958 Référence CVE CVE-2026-26960 https://www.cve.org/CVERecord?id=CVE-2026-26960 Référence CVE CVE-2026-26996 https://www.cve.org/CVERecord?id=CVE-2026-26996 Référence CVE CVE-2026-27137 https://www.cve.org/CVERecord?id=CVE-2026-27137 Référence CVE CVE-2026-27138 https://www.cve.org/CVERecord?id=CVE-2026-27138 Référence CVE CVE-2026-27139 https://www.cve.org/CVERecord?id=CVE-2026-27139 Référence CVE CVE-2026-27141 https://www.cve.org/CVERecord?id=CVE-2026-27141 Référence CVE CVE-2026-27142 https://www.cve.org/CVERecord?id=CVE-2026-27142 Référence CVE CVE-2026-27171 https://www.cve.org/CVERecord?id=CVE-2026-27171 Référence CVE CVE-2026-27571 https://www.cve.org/CVERecord?id=CVE-2026-27571 Référence CVE CVE-2026-27704 https://www.cve.org/CVERecord?id=CVE-2026-27704 Référence CVE CVE-2026-27903 https://www.cve.org/CVERecord?id=CVE-2026-27903 Référence CVE CVE-2026-27904 https://www.cve.org/CVERecord?id=CVE-2026-27904 Référence CVE CVE-2026-28417 https://www.cve.org/CVERecord?id=CVE-2026-28417 Référence CVE CVE-2026-28418 https://www.cve.org/CVERecord?id=CVE-2026-28418 Référence CVE CVE-2026-28419 https://www.cve.org/CVERecord?id=CVE-2026-28419 Référence CVE CVE-2026-28420 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0316Multiples vulnérabilités dans les produits VMware

d?id=CVE-2026-26157 Référence CVE CVE-2026-26158 https://www.cve.org/CVERecord?id=CVE-2026-26158 Référence CVE CVE-2026-26269 https://www.cve.org/CVERecord?id=CVE-2026-26269 Référence CVE CVE-2026-26960 https://www.cve.org/CVERecord?id=CVE-2026-26960 Référence CVE CVE-2026-26996 https://www.cve.org/CVERecord?id=CVE-2026-26996 Référence CVE CVE-2026-27137 https://www.cve.org/CVERecord?id=CVE-2026-27137 Référence CVE CVE-2026-27138 https://www.cve.org/CVERecord?id=CVE-2026-27138 Référence CVE CVE-2026-27139 https://www.cve.org/CVERecord?id=CVE-2026-27139 Référence CVE CVE-2026-27142 https://www.cve.org/CVERecord?id=CVE-2026-27142 Référence CVE CVE-2026-27171 https://www.cve.org/CVERecord?id=CVE-2026-27171 Référence CVE CVE-2026-27571 https://www.cve.org/CVERecord?id=CVE-2026-27571 Référence CVE CVE-2026-27704 https://www.cve.org/CVERecord?id=CVE-2026-27704 Référence CVE CVE-2026-27903 https://www.cve.org/CVERecord?id=CVE-2026-27903 Référence CVE CVE-2026-27904 https://www.cve.org/CVERecord?id=CVE-2026-27904 Référence CVE CVE-2026-28417 https://www.cve.org/CVERecord?id=CVE-2026-28417 Référence CVE CVE-2026-28418 https://www.cve.org/CVERecord?id=CVE-2026-28418 Référence CVE CVE-2026-28419 https://www.cve.org/CVERecord?id=CVE-2026-28419 Référence CVE CVE-2026-28420 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0266Multiples vulnérabilités dans VMware Tanzu

rg/CVERecord?id=CVE-2026-0992 Référence CVE CVE-2026-1484 https://www.cve.org/CVERecord?id=CVE-2026-1484 Référence CVE CVE-2026-1485 https://www.cve.org/CVERecord?id=CVE-2026-1485 Référence CVE CVE-2026-1489 https://www.cve.org/CVERecord?id=CVE-2026-1489 Référence CVE CVE-2026-1757 https://www.cve.org/CVERecord?id=CVE-2026-1757 Référence CVE CVE-2026-2100 https://www.cve.org/CVERecord?id=CVE-2026-2100 Référence CVE CVE-2026-22185 https://www.cve.org/CVERecord?id=CVE-2026-22185 Référence CVE CVE-2026-24883 https://www.cve.org/CVERecord?id=CVE-2026-24883 Référence CVE CVE-2026-26960 https://www.cve.org/CVERecord?id=CVE-2026-26960 Référence CVE CVE-2026-27171 https://www.cve.org/CVERecord?id=CVE-2026-27171 Gestion détaillée du document le 11 mars 2026 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0203Vulnérabilité dans Microsoft Azure Linux

Une vulnérabilité a été découverte dans Microsoft Azure Linux. Elle permet à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-008056Paul Marquess (pmqs)のCompress::Raw::Zlibにおける入力で指定された数量の不適切な検証に関する脆弱性

Compress::Raw::Zlib のバージョン2.219までのPerl用Compress::Raw::Zlibは、潜在的に安全でないバージョンのzlibを使用していました。Compress::Raw::Zlibにはzlibライブラリのコピーが含まれています。Compress::Raw::Zlib バージョン2.220にはzlib 1.3.2が含まれており、これはzlibの7Aセキュリティ監査の結果に対応しています。この更新には関連するセキュリティ修正が含まれています。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-004459zlib.orgのzlibにおける入力で指定された数量の不適切な検証に関する脆弱性

zlib 1.3.2以前のバージョンには、crc32_combine64およびcrc32_combine_gen64によりCPU負荷が発生する可能性があります。これは、x2nmodpが終了条件のないループ内で右シフトを実行できるためです。

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.
Fix not verified
Affected
  • openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift
  • openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
  • java-1.8.0-openjdk-portable.src as a component of Red Hat build of OpenJDK 1.8
  • java-11-openjdk-portable.src as a component of Red Hat build of OpenJDK 11 ELS
  • java-11-openjdk.src as a component of Red Hat build of OpenJDK 11 ELS
  • java-17-openjdk-portable.src as a component of Red Hat build of OpenJDK 17
  • java-21-openjdk-portable.src as a component of Red Hat build of OpenJDK 21
  • java-25-openjdk-portable.src as a component of Red Hat build of OpenJDK 25
  • java-21-openjdk as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-demo as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-demo-fastdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-demo-slowdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-devel as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-devel-fastdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-devel-slowdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-fastdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-headless as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-headless-fastdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-headless-slowdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-javadoc as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-javadoc-zip as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-jmods as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-jmods-fastdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-jmods-slowdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-slowdebug as a component of Red Hat Enterprise Linux 10
  • java-21-openjdk-src as a component of Red Hat Enterprise Linux 10
  • and 286 more
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 18 Feb 2026 · Last source change 18 Feb 2026, 13:38 UTC · CWE-1284 · Improper Validation of Specified Quantity in Input

CVE recordCVE.org · 5.2
CVSS sourceCNA
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-2026-8063
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

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
    openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; java-1.8.0-openjdk-portable.src as a component of Red Hat build of OpenJDK 1.8; java-11-openjdk-portable.src as a component of Red Hat build of OpenJDK 11 ELS; java-11-openjdk.src as a component of Red Hat build of OpenJDK 11 ELS; java-17-openjdk-portable.src as a component of Red Hat build of OpenJDK 17; java-21-openjdk-portable.src as a component of Red Hat build of OpenJDK 21; java-25-openjdk-portable.src as a component of Red Hat build of OpenJDK 25; java-21-openjdk as a component of Red Hat Enterprise Linux 10; java-21-openjdk-demo as a component of Red Hat Enterprise Linux 10; java-21-openjdk-demo-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-demo-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-devel as a component of Red Hat Enterprise Linux 10; java-21-openjdk-devel-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-devel-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-headless as a component of Red Hat Enterprise Linux 10; java-21-openjdk-headless-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-headless-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-javadoc as a component of Red Hat Enterprise Linux 10; java-21-openjdk-javadoc-zip as a component of Red Hat Enterprise Linux 10; java-21-openjdk-jmods as a component of Red Hat Enterprise Linux 10; java-21-openjdk-jmods-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-jmods-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-src as a component of Red Hat Enterprise Linux 10; and 285 more
    After
    openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; java-1.8.0-openjdk-portable.src as a component of Red Hat build of OpenJDK 1.8; java-11-openjdk-portable.src as a component of Red Hat build of OpenJDK 11 ELS; java-11-openjdk.src as a component of Red Hat build of OpenJDK 11 ELS; java-17-openjdk-portable.src as a component of Red Hat build of OpenJDK 17; java-21-openjdk-portable.src as a component of Red Hat build of OpenJDK 21; java-25-openjdk-portable.src as a component of Red Hat build of OpenJDK 25; java-21-openjdk as a component of Red Hat Enterprise Linux 10; java-21-openjdk-demo as a component of Red Hat Enterprise Linux 10; java-21-openjdk-demo-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-demo-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-devel as a component of Red Hat Enterprise Linux 10; java-21-openjdk-devel-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-devel-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-headless as a component of Red Hat Enterprise Linux 10; java-21-openjdk-headless-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-headless-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-javadoc as a component of Red Hat Enterprise Linux 10; java-21-openjdk-javadoc-zip as a component of Red Hat Enterprise Linux 10; java-21-openjdk-jmods as a component of Red Hat Enterprise Linux 10; java-21-openjdk-jmods-fastdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-jmods-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-slowdebug as a component of Red Hat Enterprise Linux 10; java-21-openjdk-src as a component of Red Hat Enterprise Linux 10; and 286 more
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-8063↗Vendor CSAF · Red Hat Product Security↗CISA Vulnrichment SSVC evidence↗Public exploit 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-2026-27171 · cve.blacktree.nl