CVE-2025-68973

7.8 HIGH

Published: December 28, 2025 Modified: January 14, 2026

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.)

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306

Source: cve@mitre.org

Product

https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9

Source: cve@mitre.org

Patch

https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51

Source: cve@mitre.org

Patch

https://gpg.fail/memcpy

Source: cve@mitre.org

Broken Link

https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i

Source: cve@mitre.org

Issue Tracking

https://news.ycombinator.com/item?id=46403200

Source: cve@mitre.org

Issue Tracking

https://www.openwall.com/lists/oss-security/2025/12/28/5

Source: cve@mitre.org

Mailing List

http://www.openwall.com/lists/oss-security/2025/12/29/11

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing List Patch

https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html

Source: af854a3a-2127-422b-91ae-364da2661108

https://gpg.fail/memcpy

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Broken Link

10 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.8 / 10.0

EPSS (Exploit Probability)

0.0%

5th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-675 CWE-787

Affected Vendors

gnupg

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