CVE-2025-12206A flaw has been found in Kamailio 5.5.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-404, CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
kamailio kamailio kamailio:kamailio | 5.5.0 | NVD |
References
- https://shimo.im/docs/aBAYMVMB2jUP9jAj/exploit, third-party-advisory
- https://vuldb.com/?ctiid.329876permissions-required, vdb-entry
- https://vuldb.com/?id.329876third-party-advisory, vdb-entry
- https://vuldb.com/?submit.673240third-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/aBAYMVMB2jUP9jAjexploit, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.