CVE-2023-31439: Systemd Project Systemd

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in systemd 253. An attacker can modify the contents of past events in a sealed log file and then adjust the file such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."

Affected products

Published 2023-06-13. Last modified 2026-06-17.