CVE-2025-68973
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
6th
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.)
| CWE | CWE-675 |
| Vendor | gnupg |
| Product | gnupg |
| Published | Dec 28, 2025 |
| Last Updated | Apr 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
GnuPG / GnuPG
0 < 2.2.51 2.3.0 < 2.4.9
References
gpg.fail: https://gpg.fail/memcpy news.ycombinator.com: https://news.ycombinator.com/item?id=46403200 openwall.com: https://www.openwall.com/lists/oss-security/2025/12/28/5 github.com: https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9 github.com: https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306 github.com: https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51 media.ccc.de: https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i openwall.com: http://www.openwall.com/lists/oss-security/2025/12/29/11 lists.debian.org: https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html