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Full vulnerability report · 2026
CVE-2026-6637High confidence

PostgreSQL refint allows stack buffer overflow and SQL injection

n/a · PostgreSQL

8.8HighCVSS 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 archivepostgresql-16Vendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.16.14-0ubuntu0.24.04.1Canonical record ↗Source updated 9 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.

1 current
CVE-2026-6637 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitypostgresql: PostgreSQL: Arbitrary code execution vulnerability in 'refint' module
1 known affected

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

  • ansible-automation-platform/bootc-automation-portal-rhel9 as a component of Self-service automation portal 2
Summary
A flaw was found in PostgreSQL. A stack buffer overflow in the 'refint' module allows an unprivileged database user to execute arbitrary code as the operating system user running the database. Additionally, a separate vulnerability exists where, if an application uses a user-controlled column as a 'refint' cascade primary key and allows user-controlled updates, a SQL injection can enable an attacker to execute arbitrary SQL commands as the database user performing the update.
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
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-2026-30291

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

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database. A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column. In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

What

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database. A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column. In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Why

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

What

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database. A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column. In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Why

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

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 → Stack-based Buffer Overflow → execute code or commands in the affected security context
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
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-121 ↗

CWE-121: Stack-based Buffer Overflow. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

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:L/UI:N/S:U/C:H/I:H/A:H

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.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
NetworkRemote code executionCWE-121
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-2929Splunk Splunk Enterprise: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um beliebigen Code auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, SQL-Injection-, serverseitige Request-Forgery- und Cross-Site-Scripting-Angriffe durchzuführen, sensible Informationen offenzulegen oder zu manipulieren, Denial-of-Service-Zustände auszulösen oder andere, nicht näher spezifizierte Angriffe durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2026-2858IBM AIX und VIOS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM AIX und IBM VIOS ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory
BSI · German · WID-SEC-W-2026-1544PostgreSQL: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in PostgreSQL ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1067Multiples vulnérabilités dans les produits IBM

VERecord?id=CVE-2026-6474 Référence CVE CVE-2026-6475 https://www.cve.org/CVERecord?id=CVE-2026-6475 Référence CVE CVE-2026-6477 https://www.cve.org/CVERecord?id=CVE-2026-6477 Référence CVE CVE-2026-6478 https://www.cve.org/CVERecord?id=CVE-2026-6478 Référence CVE CVE-2026-64958 https://www.cve.org/CVERecord?id=CVE-2026-64958 Référence CVE CVE-2026-65898 https://www.cve.org/CVERecord?id=CVE-2026-65898 Référence CVE CVE-2026-65899 https://www.cve.org/CVERecord?id=CVE-2026-65899 Référence CVE CVE-2026-65900 https://www.cve.org/CVERecord?id=CVE-2026-65900 Référence CVE CVE-2026-66010 https://www.cve.org/CVERecord?id=CVE-2026-66010 Référence CVE CVE-2026-6637 https://www.cve.org/CVERecord?id=CVE-2026-6637 Référence CVE CVE-2026-8368 https://www.cve.org/CVERecord?id=CVE-2026-8368 Référence CVE CVE-2026-8400 https://www.cve.org/CVERecord?id=CVE-2026-8400 Référence CVE CVE-2026-8723 https://www.cve.org/CVERecord?id=CVE-2026-8723 Référence CVE CVE-2026-8829 https://www.cve.org/CVERecord?id=CVE-2026-8829 Gestion détaillée du document le 21 août 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

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1056Multiples vulnérabilités dans les produits Splunk

.cve.org/CVERecord?id=CVE-2026-6276 Référence CVE CVE-2026-6429 https://www.cve.org/CVERecord?id=CVE-2026-6429 Référence CVE CVE-2026-6472 https://www.cve.org/CVERecord?id=CVE-2026-6472 Référence CVE CVE-2026-6473 https://www.cve.org/CVERecord?id=CVE-2026-6473 Référence CVE CVE-2026-6474 https://www.cve.org/CVERecord?id=CVE-2026-6474 Référence CVE CVE-2026-6475 https://www.cve.org/CVERecord?id=CVE-2026-6475 Référence CVE CVE-2026-6477 https://www.cve.org/CVERecord?id=CVE-2026-6477 Référence CVE CVE-2026-6478 https://www.cve.org/CVERecord?id=CVE-2026-6478 Référence CVE CVE-2026-6479 https://www.cve.org/CVERecord?id=CVE-2026-6479 Référence CVE CVE-2026-6637 https://www.cve.org/CVERecord?id=CVE-2026-6637 Référence CVE CVE-2026-6638 https://www.cve.org/CVERecord?id=CVE-2026-6638 Référence CVE CVE-2026-7168 https://www.cve.org/CVERecord?id=CVE-2026-7168 Référence CVE CVE-2026-7383 https://www.cve.org/CVERecord?id=CVE-2026-7383 Référence CVE CVE-2026-76251 https://www.cve.org/CVERecord?id=CVE-2026-76251 Référence CVE CVE-2026-76252 https://www.cve.org/CVERecord?id=CVE-2026-76252 Référence CVE CVE-2026-76253 https://www.cve.org/CVERecord?id=CVE-2026-76253 Référence CVE CVE-2026-76254 https://www.cve.org/CVERecord?id=CVE-2026-76254 Référence CVE CVE-2026-76255 https://www.cve.org/CVERecord?id=CVE-202

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0962Multiples vulnérabilités dans les produits Tenable

VERecord?id=CVE-2026-6475 Référence CVE CVE-2026-6477 https://www.cve.org/CVERecord?id=CVE-2026-6477 Référence CVE CVE-2026-6478 https://www.cve.org/CVERecord?id=CVE-2026-6478 Référence CVE CVE-2026-6479 https://www.cve.org/CVERecord?id=CVE-2026-6479 Référence CVE CVE-2026-64877 https://www.cve.org/CVERecord?id=CVE-2026-64877 Référence CVE CVE-2026-64878 https://www.cve.org/CVERecord?id=CVE-2026-64878 Référence CVE CVE-2026-64879 https://www.cve.org/CVERecord?id=CVE-2026-64879 Référence CVE CVE-2026-64880 https://www.cve.org/CVERecord?id=CVE-2026-64880 Référence CVE CVE-2026-64881 https://www.cve.org/CVERecord?id=CVE-2026-64881 Référence CVE CVE-2026-6637 https://www.cve.org/CVERecord?id=CVE-2026-6637 Référence CVE CVE-2026-6638 https://www.cve.org/CVERecord?id=CVE-2026-6638 Référence CVE CVE-2026-6722 https://www.cve.org/CVERecord?id=CVE-2026-6722 Référence CVE CVE-2026-6735 https://www.cve.org/CVERecord?id=CVE-2026-6735 Référence CVE CVE-2026-7258 https://www.cve.org/CVERecord?id=CVE-2026-7258 Référence CVE CVE-2026-7259 https://www.cve.org/CVERecord?id=CVE-2026-7259 Référence CVE CVE-2026-7261 https://www.cve.org/CVERecord?id=CVE-2026-7261 Référence CVE CVE-2026-7262 https://www.cve.org/CVERecord?id=CVE-2026-7262 Référence CVE CVE-2026-7263 https://www.cve.org/CVERecord?id=CVE-2026-7263 Ré

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0905Multiples vulnérabilités dans Tenable Security Center

VERecord?id=CVE-2026-6475 Référence CVE CVE-2026-6477 https://www.cve.org/CVERecord?id=CVE-2026-6477 Référence CVE CVE-2026-6478 https://www.cve.org/CVERecord?id=CVE-2026-6478 Référence CVE CVE-2026-6479 https://www.cve.org/CVERecord?id=CVE-2026-6479 Référence CVE CVE-2026-64877 https://www.cve.org/CVERecord?id=CVE-2026-64877 Référence CVE CVE-2026-64878 https://www.cve.org/CVERecord?id=CVE-2026-64878 Référence CVE CVE-2026-64879 https://www.cve.org/CVERecord?id=CVE-2026-64879 Référence CVE CVE-2026-64880 https://www.cve.org/CVERecord?id=CVE-2026-64880 Référence CVE CVE-2026-64881 https://www.cve.org/CVERecord?id=CVE-2026-64881 Référence CVE CVE-2026-6637 https://www.cve.org/CVERecord?id=CVE-2026-6637 Référence CVE CVE-2026-6638 https://www.cve.org/CVERecord?id=CVE-2026-6638 Référence CVE CVE-2026-6722 https://www.cve.org/CVERecord?id=CVE-2026-6722 Référence CVE CVE-2026-6735 https://www.cve.org/CVERecord?id=CVE-2026-6735 Référence CVE CVE-2026-7258 https://www.cve.org/CVERecord?id=CVE-2026-7258 Référence CVE CVE-2026-7259 https://www.cve.org/CVERecord?id=CVE-2026-7259 Référence CVE CVE-2026-7261 https://www.cve.org/CVERecord?id=CVE-2026-7261 Référence CVE CVE-2026-7262 https://www.cve.org/CVERecord?id=CVE-2026-7262 Référence CVE CVE-2026-7263 https://www.cve.org/CVERecord?id=CVE-2026-7263 Ré

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0816Multiples vulnérabilités dans Stormshield Management Center

De multiples vulnérabilités ont été découvertes dans Stormshield Management Center. Elles permettent à un attaquant de provoquer une exécution de code arbitraire, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0788Multiples vulnérabilités dans les produits IBM

.cve.org/CVERecord?id=CVE-2026-5598 Référence CVE CVE-2026-5758 https://www.cve.org/CVERecord?id=CVE-2026-5758 Référence CVE CVE-2026-6472 https://www.cve.org/CVERecord?id=CVE-2026-6472 Référence CVE CVE-2026-6473 https://www.cve.org/CVERecord?id=CVE-2026-6473 Référence CVE CVE-2026-6474 https://www.cve.org/CVERecord?id=CVE-2026-6474 Référence CVE CVE-2026-6475 https://www.cve.org/CVERecord?id=CVE-2026-6475 Référence CVE CVE-2026-6477 https://www.cve.org/CVERecord?id=CVE-2026-6477 Référence CVE CVE-2026-6478 https://www.cve.org/CVERecord?id=CVE-2026-6478 Référence CVE CVE-2026-6479 https://www.cve.org/CVERecord?id=CVE-2026-6479 Référence CVE CVE-2026-6637 https://www.cve.org/CVERecord?id=CVE-2026-6637 Référence CVE CVE-2026-6638 https://www.cve.org/CVERecord?id=CVE-2026-6638 Référence CVE CVE-2026-6918 https://www.cve.org/CVERecord?id=CVE-2026-6918 Référence CVE CVE-2026-8646 https://www.cve.org/CVERecord?id=CVE-2026-8646 Référence CVE CVE-2026-8723 https://www.cve.org/CVERecord?id=CVE-2026-8723 Référence CVE CVE-2026-9006 https://www.cve.org/CVERecord?id=CVE-2026-9006 Référence CVE CVE-2026-9071 https://www.cve.org/CVERecord?id=CVE-2026-9071 Référence CVE CVE-2026-9311 https://www.cve.org/CVERecord?id=CVE-2026-9311 Référence CVE CVE-2026-9320 https://www.cve.org/CVERecord?id=CVE-2026-9320 Ré

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0612Multiples vulnérabilités dans les produits Microsoft

De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0595Multiples vulnérabilités dans PostgreSQL

De multiples vulnérabilités ont été découvertes dans PostgreSQL. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service à distance et une atteinte à la confidentialité des données.

Official advisory
NCSC-NL · Dutch · NCSC-2026-0321Meerdere kwetsbaarheden verholpen in IBM AIX en IBM PowerVM VIOS

Multiple PostgreSQL versions prior to 18.4, 17.10, 16.14, 15.18, and 14.23 contain critical vulnerabilities including a stack buffer overflow and SQL injection in the 'refint' module, along with various privilege, overflow, path traversal, and timing attack issues.

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
ansible-automation-platform/bootc-automation-portal-rhel9 as a component of Self-service automation portal 2
Fixed
postgresql-0:9.2.24-9.el7_9.6.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-0:9.2.24-9.el7_9.6.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-0:9.2.24-9.el7_9.6.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-0:9.2.24-9.el7_9.6.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-0:9.2.24-9.el7_9.6.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-0:9.2.24-9.el7_9.6.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-0:9.2.24-9.el7_9.6.src as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-0:9.2.24-9.el7_9.6.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-contrib-0:9.2.24-9.el7_9.6.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-contrib-0:9.2.24-9.el7_9.6.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-contrib-0:9.2.24-9.el7_9.6.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-contrib-0:9.2.24-9.el7_9.6.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-debuginfo-0:9.2.24-9.el7_9.6.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-debuginfo-0:9.2.24-9.el7_9.6.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-debuginfo-0:9.2.24-9.el7_9.6.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-debuginfo-0:9.2.24-9.el7_9.6.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-debuginfo-0:9.2.24-9.el7_9.6.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-debuginfo-0:9.2.24-9.el7_9.6.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-debuginfo-0:9.2.24-9.el7_9.6.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-devel-0:9.2.24-9.el7_9.6.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-devel-0:9.2.24-9.el7_9.6.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-devel-0:9.2.24-9.el7_9.6.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-devel-0:9.2.24-9.el7_9.6.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-devel-0:9.2.24-9.el7_9.6.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-devel-0:9.2.24-9.el7_9.6.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-devel-0:9.2.24-9.el7_9.6.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-docs-0:9.2.24-9.el7_9.6.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-docs-0:9.2.24-9.el7_9.6.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-docs-0:9.2.24-9.el7_9.6.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS); postgresql-docs-0:9.2.24-9.el7_9.6.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS); and 3631 more
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 14 May 2026 · Last source change 15 May 2026, 03:56 UTC · CWE-121 · Stack-based Buffer Overflow

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-2026-30291
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 →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-30291↗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-2026-6637 · cve.blacktree.nl