CVE-2025-12204: A security vulnerability has been detected in Kamailio 5.5. Impacted is the function rve_destroy of the file…
CVE-2025-12204 · Severity: medium · CVSS 5.3 · Published 2025-10-27
A security vulnerability has been detected in Kamailio 5.5. Impacted is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. There is ongoing doubt regarding the real existence of this vulnerability. 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.
No. Junglewise Threat Intelligence has no report of CVE-2025-12204 being exploited in the wild.
How severe is CVE-2025-12204?
Medium severity, with a CVSS score of 5.3, published 27 October 2025.
Which products and versions are affected?
Kamailio. The advisory does not name versions.
Is there a fix for CVE-2025-12204?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-12204?
Check whether you run Kamailio. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.