Ubuntu Security Notices USN-8040-1 USN-8040-1: MUNGE vulnerability Publication date 12 February 2026 Overview MUNGE could be made to crash or run programs as your login if it opened a specially crafted file. Releases 25.10 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS 14.04 LTS Packages munge - authentication service for credentials Details Titouan Lazard discovered that MUNGE contained an exploitable buffer overflow in munged (the MUNGE authentication daemon). A local attacker could possibly use this issue to forge MUNGE credentials, leading to arbitrary code execution. Titouan Lazard discovered that MUNGE contained an exploitable buffer overflow in munged (the MUNGE authentication daemon). A local attacker could possibly use this issue to forge MUNGE credentials, leading to arbitrary code execution. Update instructions In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 25.10 questing libmunge-dev – 0.5.16-1ubuntu0.1 libmunge2 – 0.5.16-1ubuntu0.1 munge – 0.5.16-1ubuntu0.1 24.04 LTS noble libmunge-dev – 0.5.15-4ubuntu0.1 libmunge2 – 0.5.15-4ubuntu0.1 munge – 0.5.15-4ubuntu0.1 22.04 LTS jammy libmunge-dev – 0.5.14-6ubuntu0.1 libmunge2 – 0.5.14-6ubuntu0.1 munge – 0.5.14-6ubuntu0.1 20.04 LTS focal libmunge-dev – 0.5.13-2ubuntu0.1~esm1 libmunge2 – 0.5.13-2ubuntu0.1~esm1 munge – 0.5.13-2ubuntu0.1~esm1 18.04 LTS bionic libmunge-dev – 0.5.13-1ubuntu0.1~esm1 libmunge2 – 0.5.13-1ubuntu0.1~esm1 munge – 0.5.13-1ubuntu0.1~esm1 16.04 LTS xenial libmunge-dev – 0.5.11-3ubuntu0.1+esm1 libmunge2 – 0.5.11-3ubuntu0.1+esm1 munge – 0.5.11-3ubuntu0.1+esm1 14.04 LTS trusty libmunge-dev – 0.5.11-1ubuntu1.1+esm1 libmunge2 – 0.5.11-1ubuntu1.1+esm1 munge – 0.5.11-1ubuntu1.1+esm1 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2026-25506 CVE-2026-25506