CVE-2011-1507: Digium Asterisk

Medium severity, CVSS 5.0. EPSS: 2.5% chance of exploitation in the next 30 days.

Asterisk Open Source 1.4.x before 1.4.40.1, 1.6.1.x before 1.6.1.25, 1.6.2.x before 1.6.2.17.3, and 1.8.x before 1.8.3.3 and Asterisk Business Edition C.x.x before C.3.6.4 do not restrict the number of unauthenticated sessions to certain interfaces, which allows remote attackers to cause a denial of service (file descriptor exhaustion and disk space exhaustion) via a series of TCP connections.

Affected products

• Digium Asterisk: version 1.4.0 only; version 1.4.1 only; version 1.4.2 only; version 1.4.3 only; version 1.4.10 only; version 1.4.10.1 only; …

Published 2011-04-27. Last modified 2026-06-16.