CVE-2025-68973

Name: CVE-2025-68973
Creator: NVD / NIST
Published: 2025-12-28T17:16:01.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 0.13%

Last modified Jun 17, 2026

CVE-2025-68973 is a high-severity vulnerability rated 7/10 on the CVSS scale. 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.). EPSS estimates a 0.13% chance of exploitation in the next 30 days.

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.)

Metrics

CVSS 3.1

7/10

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

EPSS Probability

0.13%

2.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gnupg	Gnupg	<= 2.4.8

References

https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306Product
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 List, Patch
https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html
https://gpg.fail/memcpyBroken Link

Timeline

Published: Dec 28, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-68973?

How severe is CVE-2025-68973?

CVE-2025-68973 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.

How do I fix CVE-2025-68973?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-68973?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST