CVE-2026-106804
highA stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module.
A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://gist.github.com/hackeryounow/f5af75502ea6df600428c46bb9bbf39e cve@mitre.org
- https://github.com/kamailio/kamailio/issues/4953 cve@mitre.org
- https://github.com/kamailio/kamailio/issues/4953 134c704f-9b21-4f2e-91b3-4a467353bcc0