VULNERABILITY INTELLIGENCE

CVE-2011-2561

CVSS score7.1 HIGH
EPSS probability1.06%
CISA KEVNot currently listed
Published2011-08-29
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:C

Description

The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990.

Primary references