Vulnerability DatabaseCVE-2025-68973
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CVE-2025-68973
December 28, 2025
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.)
Affected Packages
https://github.com/gpg/gnupg.git (GITHUB):
Affected version(s) >=gnupg-1.2.8 <gnupg-2.5.14
Fix Suggestion:
Update to version gnupg-2.5.14
Related Resources (9)
https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i
https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html
https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9
https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51
https://www.openwall.com/lists/oss-security/2025/12/28/5
https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306
http://www.openwall.com/lists/oss-security/2025/12/29/11
https://gpg.fail/memcpy
https://news.ycombinator.com/item?id=46403200
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CVSS v4
Base Score:
8.7
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Multiple Operations on Resource in Single-Operation Context
CWE-675
Out-of-bounds Write
CWE-787
EPSS
Base Score:
0.02