CVE-2025-68973

Publication date 28 December 2025

Last updated 8 January 2026

Ubuntu priority

Cvss 3 Severity Score

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.)

Why is this CVE high priority?

OOB write

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gnupg	16.04 LTS xenial	Fixed in 1.4.20-1ubuntu3.3+esm3
gnupg	14.04 LTS trusty	Fixed in 1.4.16-1ubuntu2.6+esm2
gnupg2	25.10 questing	Fixed in 2.4.8-2ubuntu2.1
	25.04 plucky	Fixed in 2.4.4-2ubuntu23.2
	24.04 LTS noble	Fixed in 2.4.4-2ubuntu17.4
	22.04 LTS jammy	Fixed in 2.2.27-3ubuntu2.5
	20.04 LTS focal	Fixed in 2.2.19-3ubuntu2.5+esm1
	18.04 LTS bionic	Fixed in 2.2.4-1ubuntu1.6+esm2
	16.04 LTS xenial	Fixed in 2.1.11-6ubuntu2.1+esm3

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.8 · High

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Changed
Confidentiality impact	High
Integrity impact	High
Availability impact	None

Scores

Parameter	Value
Base score	7.8 · High
Exploitability score	-
Impact score	-

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

References

Related Ubuntu Security Notices (USN)

USN-7946-1
GnuPG vulnerability
8 January 2026

USN-7946-2
GnuPG vulnerability
8 January 2026