VULNERABILITY INTELLIGENCE

CVE-2026-39864

CVSS score4.4 MEDIUM
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-04-08
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Description

Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.0.5 and 5.8.7, an out-of-bounds read in the auth module of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted SIP packet if a successful user authentication without a database backend is followed by additional user identity checks. This vulnerability is fixed in 6.0.5 and 5.8.7.

Weakness classification

  • security-advisories@github.com: CWE-125

Primary references