CVE-2025-12207

3.3 LOW
Published: October 27, 2025 Modified: November 04, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://shimo.im/docs/vVqRMVMlrycMO63y/
Source: cna@vuldb.com
Exploit Third Party Advisory
https://vuldb.com/?ctiid.329877
Source: cna@vuldb.com
Permissions Required VDB Entry
https://vuldb.com/?id.329877
Source: cna@vuldb.com
Third Party Advisory VDB Entry
https://vuldb.com/?submit.673241
Source: cna@vuldb.com
Third Party Advisory VDB Entry
http://www.openwall.com/lists/oss-security/2025/10/27/12
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2025/10/27/8
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.openwall.com/lists/oss-security/2025/10/27/8
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Mailing List
https://shimo.im/docs/vVqRMVMlrycMO63y
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Third Party Advisory

9 reference(s) from NVD

Quick Stats

CVSS v3 Score
3.3 / 10.0
EPSS (Exploit Probability)
0.0%
6th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

kamailio