CVE-2026-39864 — Kamailio Auth: Processing Vulnerability For Additional Authenticated User Identity Checks
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) al…
Published: 2026-04-08 · CVSS: 4.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7