Use After Free Affecting kamailio package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-DEBIAN12-KAMAILIO-13722624
  • published28 Oct 2025
  • disclosed27 Oct 2025

Introduced: 27 Oct 2025

NewCVE-2025-12205  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Debian:12 kamailio.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kamailio package and not the kamailio package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A vulnerability was detected in Kamailio 5.5. The affected element is the function sr_push_yy_state of the file src/core/cfg.lex of the component Configuration File Handler. The manipulation results in use after free. The attack must be initiated from a local position. The exploit is now public and may be used. The real existence of this vulnerability is still doubted at the moment. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Base Scores

version 3.1