Unspecified vulnerability in Cisco Unified Communications Manager (CUCM, formerly CallManager) and Unified Presence Server (CUPS) allows remote attackers to cause a denial of service (loss of cluster services) via unspecified vectors, aka (1) CSCsj09859 and (2) CSCsj19985.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35341
http://www.vupen.com/english/advisories/2007/2511
http://www.securityfocus.com/bid/24867
http://www.cisco.com/warp/public/707/cisco-sa-20070711-voip.shtml