The WIL-A module in Cisco TelePresence VX Clinical Assistant 1.2 before 1.21 changes the admin password to an empty password upon a reboot, which makes it easier for remote attackers to obtain access via the administrative interface, aka Bug ID CSCuj17238.
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20131106-tvxca