CVE-2025-12205

5.3 MEDIUM
Published: October 27, 2025 Modified: November 04, 2025

Description

A vulnerability was detected in Kamailio 5.5. The affected element is the function sr_push_yy_state of the file src/core/cfg.lex of the component Configuration File Handler. The manipulation results in use after free. The attack must be initiated from a local position. The exploit is now public and may be used. The real existence of this vulnerability is still doubted at the moment. 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:L/I:L/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://shimo.im/docs/ZzkLMVMLOzIRlpAQ/
Source: cna@vuldb.com
Exploit Third Party Advisory
https://vuldb.com/?ctiid.329875
Source: cna@vuldb.com
Permissions Required VDB Entry
https://vuldb.com/?id.329875
Source: cna@vuldb.com
Third Party Advisory VDB Entry
https://vuldb.com/?submit.673225
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

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.0%
3th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

kamailio