CVE-2007-1306: Digium Asterisk

High severity, CVSS 7.8. EPSS: 20.9% chance of exploitation in the next 30 days.

Asterisk 1.4 before 1.4.1 and 1.2 before 1.2.16 allows remote attackers to cause a denial of service (crash) by sending a Session Initiation Protocol (SIP) packet without a URI and SIP-version header, which results in a NULL pointer dereference.

Affected products

• Digium Asterisk: version 1.2.0_beta1 only; version 1.2.0_beta2 only; version 1.2.6 only; version 1.2.7 only; version 1.2.8 only; version 1.2.9 only; …

Published 2007-03-07. Last modified 2026-06-16.