In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
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Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-28. NVD baseline CVSS 7.8; sources differ by 0.0.
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
December 28, 2025
January 14, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Red Hat Security Advisory: RHACS 4.9.3 security and bug fix update
Red Hat Security Advisory: Red Hat Update Infrastructure 5 security update
Red Hat Security Advisory: Insights proxy Container Image
Red Hat Security Advisory: RHACS 4.9.3 security and bug fix update
Red Hat Security Advisory: OpenShift Compliance Operator bug fix and enhancement update
Red Hat Security Advisory: Red Hat Ceph Storage
Red Hat Security Advisory: A Subscription Management tool for finding and reporting Red Hat product usage
Red Hat Security Advisory: gnupg2 security update
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
In GnuPG through 2.4.8, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
RHSA-2026:0697 — Important
RHSA-2026:0719 — Important
GnuPG vulnerability
GnuPG vulnerability
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
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msrc · redhat
CWE-787