CVE-2025-12207

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.

The following products are affected by CVE-2025-12207 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-12207.

URL	Resource
http://www.openwall.com/lists/oss-security/2025/10/27/12
http://www.openwall.com/lists/oss-security/2025/10/27/8
https://shimo.im/docs/vVqRMVMlrycMO63y
https://shimo.im/docs/vVqRMVMlrycMO63y/
https://vuldb.com/?ctiid.329877
https://vuldb.com/?id.329877
https://vuldb.com/?submit.673241
https://www.openwall.com/lists/oss-security/2025/10/27/8
https://www.openwall.com/lists/oss-security/2025/11/02/3