CVE-2025-68973

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

28/12/2025

Last modified:

28/12/2025

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

7.80

Severity 3.x

HIGH

References to Advisories, Solutions, and Tools

https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306
https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9
https://gpg.fail/memcpy
https://news.ycombinator.com/item?id=46403200
https://www.openwall.com/lists/oss-security/2025/12/28/5