CVE-2025-12205
Kamailio Configuration File cfg.lex sr_push_yy_state use after free
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-416 CWE-119 |
| Vendor | n/a |
| Product | kamailio |
| Published | Oct 27, 2025 |
| Last Updated | Feb 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
n/a / Kamailio
5.5
References
vuldb.com: https://vuldb.com/?id.329875 vuldb.com: https://vuldb.com/?ctiid.329875 vuldb.com: https://vuldb.com/?submit.673225 shimo.im: https://shimo.im/docs/ZzkLMVMLOzIRlpAQ/ openwall.com: https://www.openwall.com/lists/oss-security/2025/11/02/3 openwall.com: https://www.openwall.com/lists/oss-security/2025/10/27/8 openwall.com: http://www.openwall.com/lists/oss-security/2025/10/27/12 openwall.com: http://www.openwall.com/lists/oss-security/2025/10/27/8
Credits
🔍 zh_vul (VulDB User) VulDB