CVE-2025-12207
A vulnerability has been found in Kamailio 5.5.
Does this matter?
Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 1.9 LOWCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.21% probability · 12th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-404, CWE-476
- Affected
- kamailio/kamailio
- Source
- cna@vuldb.com
References
- https://shimo.im/docs/vVqRMVMlrycMO63y/Exploit, Third Party Advisory
- https://vuldb.com/?ctiid.329877Permissions Required, VDB Entry
- https://vuldb.com/?id.329877Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.673241Third Party Advisory, VDB Entry
- https://www.openwall.com/lists/oss-security/2025/11/02/3
- http://www.openwall.com/lists/oss-security/2025/10/27/12
- http://www.openwall.com/lists/oss-security/2025/10/27/8
- https://www.openwall.com/lists/oss-security/2025/10/27/8Issue Tracking, Mailing List
- https://shimo.im/docs/vVqRMVMlrycMO63yExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.