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7.5 High

A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the imsqosnpn module.

CVE-2026-106804

A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the imsqosnpn module. The wrxaarregister() 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.

Assessment

CVSS
7.5 (v3.1)
Severity
High
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
2 November 2026
Last updated
2 November 2026
Affected
n/a · n/a
Assigner
mitre

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

At the source

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