{"id":"CVE-2012-3949","aliases":["EUVD-2012-3893","GHSA-g9vp-vrrf-jgjx"],"status":"published","title":"The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b...","description":"The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.","severity":{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03203,"percentile":0.88228,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2012-09-27T00:00:00Z","modified":"2026-06-16T23:44:06Z","products":[{"vendor":"cisco","product":"ios"},{"vendor":"cisco","product":"ios_xe"},{"vendor":"cisco","product":"unified_communications_manager"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-cucm","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://secunia.com/advisories/50774","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Not Applicable"]},{"url":"http://osvdb.org/85816","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","Broken Link"]},{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-sip","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/55697","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-3949"},{"url":"https://github.com/advisories/GHSA-g9vp-vrrf-jgjx"}],"sources":{"cve":[{"id":"CVE-2012-3949","description":"The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.","status":"published","published":"2012-09-27T00:00:00Z","modified":"2024-08-06T20:21:04.181Z","updated_at":"2026-11-02T14:34:50.263482Z"}],"euvd":[{"id":"EUVD-2012-3893","description":"The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.","status":"published","published":"2012-09-27T00:00:00Z","modified":"2024-08-06T20:21:04Z","updated_at":"2026-11-03T01:56:09.412323Z"}],"ghsa":[{"id":"GHSA-g9vp-vrrf-jgjx","title":"The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b...","description":"The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.","status":"published","published":"2022-05-17T01:22:52Z","modified":"2023-02-03T05:04:03Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:28.881715Z"}],"nvd":[{"id":"CVE-2012-3949","description":"The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.","status":"published","published":"2012-09-27T00:55:00.797Z","modified":"2026-06-16T23:44:06.667Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:16.115119Z"}]}}