CVE-2026-5303: Axis Communications Ab Axis OS

Medium severity, CVSS 5.7. EPSS: 0.2% chance of exploitation in the next 30 days.

The ACAP framework contains a Time-of-Check to Time-of-Use (TOCTOU) race condition, which could potentially lead to privilege escalation. This vulnerability can only be exploited if the Axis device is configured to allow the installation of unsigned ACAP applications, and if an attacker convinces the victim to install a malicious ACAP application.

Affected products

• Axis Communications Ab Axis OS: from 12.0.0, before 12.11.31 (fixed in 12.11.31)

Published 2026-08-11. Last modified 2026-09-03.