Cisco TelePresence Video Communication Server (VCS) and Expressway Software before X8.1.1 allow remote attackers to cause a denial of service (device reload) via crafted SIP packets, aka Bug IDs CSCum60442 and CSCum60447.
http://www.securitytracker.com/id/1031055
http://tools.cisco.com/security/center/viewAlert.x?alertId=35829
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20141015-vcs