Cisco Prime Collaboration Assurance before 11.0 has a hardcoded cmuser account, which allows remote attackers to obtain access by establishing an SSH session and leveraging knowledge of this account's password, aka Bug ID CSCus62707.
http://www.securitytracker.com/id/1034361
http://www.securityfocus.com/bid/78738
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151209-pca