The conversion utility for converting CiscoWorks Wireless LAN Solution Engine (WLSE) 4.1.91.0 and earlier to Cisco Wireless Control System (WCS) creates administrator accounts with default usernames and passwords, which allows remote attackers to gain privileges.
https://exchange.xforce.ibmcloud.com/vulnerabilities/37053
http://www.vupen.com/english/advisories/2007/3456
http://www.securitytracker.com/id?1018797
http://www.securityfocus.com/bid/26000
http://www.cisco.com/en/US/products/products_security_advisory09186a00808d72db.shtml