CVE-2013-2685: Asterisk Open Source

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

Stack-based buffer overflow in res/res_format_attr_h264.c in Asterisk Open Source 11.x before 11.2.2 allows remote attackers to execute arbitrary code via a long sprop-parameter-sets H.264 media attribute in a SIP Session Description Protocol (SDP) header.

Affected products

• Asterisk Open Source: 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; …

Published 2013-04-01. Last modified 2026-06-16.