# CVE-2025-12206: A flaw has been found in Kamailio 5.5. The impacted element is the function rve_is_constant of the file…

Source: https://junglewise.ai/threats/cve-2025-12206-a-flaw-has-been-found-in-kamailio-5-5-the-impacted-element-is-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-10-27  
License: CC BY 4.0 with a link back

CVE-2025-12206 · Severity: low · CVSS 3.3 · Published 2025-10-27

A flaw has been found in Kamailio 5.5. The impacted element is the function rve_is_constant of the file src/core/rvalue.c. This manipulation causes null pointer dereference. The attack needs to be launched locally. The exploit has been published and may be used. It is still unclear if this vulnerability genuinely exists. 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.

Technologies: [Kamailio](https://junglewise.ai/threats/technologies/kamailio). Vendors: [Kamailio](https://junglewise.ai/threats/vendors/kamailio).

## Quick answers

**Is CVE-2025-12206 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-12206 being exploited in the wild.

**How severe is CVE-2025-12206?** Low severity, with a CVSS score of 3.3, published 27 October 2025.

**Which products and versions are affected?** Kamailio. The advisory does not name versions.

**Is there a fix for CVE-2025-12206?** 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-2025-12206?** 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.

## Affected products

- Kamailio

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