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Medium severity4.4NVD Advisory· Published Apr 8, 2026· Updated Apr 15, 2026

CVE-2026-39864

CVE-2026-39864

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.

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Affected products

2
  • Kamailio/Kamailio2 versions
    cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*range: <5.8.7
    • (no CPE)range: <6.0.5, <5.8.7

Patches

Vulnerability mechanics

References

1

News mentions

0

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