CVE-2025-12206
LOW EPSS 12.3%
Published Oct 27, 20258mo ago · Modified Jun 17, 20262w ago
1.9 CVSS 4.0
Published Oct 27, 2025 8mo ago
Last Modified Jun 17, 2026 2w ago
Description
A flaw has been found in Kamailio 5.5. The impacted element is the function rve_is_constant of the file src/core/rvalue.c. This manipulation causes null pointer dereference. The attack needs to be launched locally. The exploit has been published and may be used. It is still unclear if this vulnerability genuinely exists. 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 Details
Base Score
Exploitability
Impact
Vector string
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: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 Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
12.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 2
CWE-404
CWE-476 NULL Pointer Dereference Memory Safety
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| kamailio | kamailio | 5.5.0 | any |
References 9
- 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
- shimo.im https://shimo.im/docs/aBAYMVMB2jUP9jAj
- shimo.im https://shimo.im/docs/aBAYMVMB2jUP9jAj/
- vuldb.com https://vuldb.com/?ctiid.329876
- vuldb.com https://vuldb.com/?id.329876
- vuldb.com https://vuldb.com/?submit.673240
- openwall.com https://www.openwall.com/lists/oss-security/2025/10/27/8
- openwall.com https://www.openwall.com/lists/oss-security/2025/11/02/3
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.