{"id":"CVE-2011-2561","aliases":["EUVD-2011-2544","GHSA-jxqj-hhh8-m26w"],"status":"published","title":"The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x...","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.","severity":{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0106,"percentile":0.64797,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2011-08-29T15:00:00Z","modified":"2026-06-16T23:31:34Z","products":[{"vendor":"cisco","product":"unified_communications_manager"}],"references":[{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-2561"},{"url":"https://github.com/advisories/GHSA-jxqj-hhh8-m26w"}],"sources":{"cve":[{"id":"CVE-2011-2561","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.","status":"published","published":"2011-08-29T15:00:00Z","modified":"2024-09-17T00:11:11.107Z","updated_at":"2026-11-02T14:35:36.603688Z"}],"euvd":[{"id":"EUVD-2011-2544","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.","status":"published","published":"2011-08-29T15:00:00Z","modified":"2024-09-17T00:11:11Z","updated_at":"2026-11-03T00:29:01.573177Z"}],"ghsa":[{"id":"GHSA-jxqj-hhh8-m26w","title":"The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x...","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.","status":"published","published":"2022-05-17T05:28:35Z","modified":"2023-01-28T05:04:17Z","updated_at":"2026-11-02T14:44:08.629318Z"}],"nvd":[{"id":"CVE-2011-2561","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.","status":"published","published":"2011-08-29T15:55:01.22Z","modified":"2026-06-16T23:31:34.987Z","cvss":[{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:02:09.988332Z"}]}}