CVE-2025-12207: Kamailio · CWE-404
Source GCVE Database
Public exploit available · CVSS 4.8 Medium.
Data as of 4 Nov 2026, 17:16 UTC
CVSS: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:PExploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.
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 vendor was contacted early about this disclosure but did not respond in any way.
References
- nvd.nist.gov/vuln/detail/CVE-2025-12207 (opens in a new tab)
- shimo.im/docs/vVqRMVMlrycMO63y (opens in a new tab)
- vuldb.com (opens in a new tab)
- vuldb.com (opens in a new tab)
- vuldb.com (opens in a new tab)
- openwall.com/lists/oss-security/2025/10/27/8 (opens in a new tab)
- openwall.com/lists/oss-security/2025/11/02/3 (opens in a new tab)
- openwall.com/lists/oss-security/2025/10/27/12 (opens in a new tab)
- openwall.com/lists/oss-security/2025/10/27/8 (opens in a new tab)