CVE-2025-12204
Kamailio Configuration File rvalue.c rve_destroy heap-based overflow
Description
A security vulnerability has been detected in Kamailio 5.5. Impacted is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. There is ongoing doubt regarding the real existence of this vulnerability. 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.
INFO
Published Date :
Oct. 27, 2025, 3:15 a.m.
Last Modified :
Nov. 4, 2025, 10:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Kamailio to a patched version.
- Apply vendor-provided security patches.
- Review configuration for insecure settings.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-12204.
| URL | Resource |
|---|---|
| https://shimo.im/docs/loqeMWMyZGtpEYqn/ | Exploit Third Party Advisory |
| https://vuldb.com/?ctiid.329874 | Permissions Required VDB Entry |
| https://vuldb.com/?id.329874 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.673224 | Third 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/2025/10/28/1 | |
| https://www.openwall.com/lists/oss-security/2025/10/27/8 | Issue Tracking Mailing List |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-12204 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-12204
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-12204 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-12204 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 04, 2025
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2025/10/27/12 Added Reference http://www.openwall.com/lists/oss-security/2025/10/28/1 -
CVE Modified by [email protected]
Nov. 03, 2025
Action Type Old Value New Value Added Tag disputed Changed Description A security vulnerability has been detected in Kamailio 5.5. Impacted is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way. A security vulnerability has been detected in Kamailio 5.5. Impacted is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. There is ongoing doubt regarding the real existence of this vulnerability. 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. Added Reference https://www.openwall.com/lists/oss-security/2025/11/02/3 -
Initial Analysis by [email protected]
Oct. 28, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added CPE Configuration OR *cpe:2.3:a:kamailio:kamailio:5.5.0:*:*:*:*:*:*:* Added Reference Type VulDB: https://shimo.im/docs/loqeMWMyZGtpEYqn/ Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/?ctiid.329874 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.329874 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.673224 Types: Third Party Advisory, VDB Entry Added Reference Type CVE: https://www.openwall.com/lists/oss-security/2025/10/27/8 Types: Issue Tracking, Mailing List -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Oct. 28, 2025
Action Type Old Value New Value Added Reference https://www.openwall.com/lists/oss-security/2025/10/27/8 -
New CVE Received by [email protected]
Oct. 27, 2025
Action Type Old Value New Value Added Description A security vulnerability has been detected in Kamailio 5.5. Impacted is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:L/AC:L/Au:S/C:P/I:P/A:P) Added CWE CWE-119 Added CWE CWE-122 Added Reference https://shimo.im/docs/loqeMWMyZGtpEYqn/ Added Reference https://vuldb.com/?ctiid.329874 Added Reference https://vuldb.com/?id.329874 Added Reference https://vuldb.com/?submit.673224