4.8
Medium
CVE-2025-12207 A vulnerability has been found in Kamailio 5.5
Description
A vulnerability has been found in Kamailio 5.5. This affects the function yyerror_at of the file src/core/cfg.y of the component Grammar Rule Handler. Such manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed to the public and may be used. The actual existence of this vulnerability is currently in question. 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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Kamailio | 5.5 | No fix stated |
References
- VDB-329877 | Kamailio Grammar Rule cfg.y yyerror_at null pointer dereference vuldb.com
- VDB-329877 | CTI Indicators (IOB, IOC, IOA) vuldb.com
- Submit #673241 | Kamailio Project Kamailio SIP Server 5.5 NULL Pointer Dereference vuldb.com
- shimo.im shimo.im
- www.openwall.com www.openwall.com
Timeline
- Published
- Last modified
Other CVEs of Kamailio
The 7 CVEs of Kamailio →
CVE-2026-108822
A vulnerability was detected in Kamailio up to 6.0.7/6.1.3
6.9
Medium
CVE-2026-93962
A weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1
6.9
Medium
CVE-2026-82608
A vulnerability was determined in Kamailio up to 5.5.0/6.0.7
5.3
Medium
CVE-2025-12206
A flaw has been found in Kamailio 5.5
4.8
Medium