The Real-Time Information Server (RIS) Data Collector service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3) and 6.x before 6.1(1) allows remote attackers to bypass authentication, and obtain cluster configuration information and statistics, via a direct TCP connection to the service port, aka Bug ID CSCsj90843.
https://exchange.xforce.ibmcloud.com/vulnerabilities/43355
http://www.vupen.com/english/advisories/2008/1933/references
http://www.securitytracker.com/id?1020361
http://www.securityfocus.com/bid/29935
http://www.cisco.com/en/US/products/products_security_advisory09186a00809b9011.shtml