CVE-2025-12205

Kamailio Configuration File cfg.lex sr_push_yy_state use after free

HIGH
7.8
CVSS Score
Published: October 27, 2025 at 02:32 AM UTC
Updated: October 19, 2026 at 01:10 PM UTC
1 product affected across 1 vendorKamailio

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
PoC

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 vendor was contacted early about this disclosure but did not respond in any way.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.329875
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.329875
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.673225
ExploitThird Party Advisory
Source: cverecord
https://shimo.im/docs/ZzkLMVMLOzIRlpAQ/
Source: af854a3a-2127-422b-91ae-364da2661108
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
Issue TrackingMailing List
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.openwall.com/lists/oss-security/2025/10/27/8

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416CWE-119

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