Vulnerability 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 Score
7.8
HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnupg | Gnupg | <= 2.4.8 |
Related Weaknesses (CWE)
References
- https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/aProduct
- 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 ListPatch
- https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html
- https://gpg.fail/memcpyBroken Link
FAQ
What is CVE-2025-68973?
CVE-2025-68973 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 late...
How severe is CVE-2025-68973?
CVE-2025-68973 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-68973?
Check the references section above for vendor advisories and patch information. Affected products include: Gnupg Gnupg.