VulnerabilityModified
CVE-2025-68973
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.
HIGH 7.0EPSS 0.15%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.)
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.15% probability · 4th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-675, CWE-787
- Affected
- gnupg/gnupg
- Source
- cve@mitre.org
References
- https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306Product
- https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9Patch
- https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51Patch
- https://gpg.fail/memcpyBroken Link
- https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-iIssue Tracking
- https://news.ycombinator.com/item?id=46403200Issue Tracking
- https://www.openwall.com/lists/oss-security/2025/12/28/5Mailing List
- http://www.openwall.com/lists/oss-security/2025/12/29/11Mailing List, Patch
- https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html
- https://gpg.fail/memcpyBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.