CVE-2016-7551: Debian Linux

High severity, CVSS 7.5. EPSS: 5.3% chance of exploitation in the next 30 days.

chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).

Affected products

• Debian Debian Linux: version 8.0 only
• Digium Asterisk: version 11.0.0 only; version 11.0.1 only; version 11.0.2 only; version 11.1.0 only; version 11.1.1 only; version 11.1.2 only; …
• Digium Certified Asterisk: version 11.6 only; version 11.6.0 only; version 13.8 only; version 13.8.0 only

Published 2017-04-17. Last modified 2026-06-17.