Cisco WebEx Meetings Server does not check whether a user account is active, which allows remote authenticated users to bypass intended access restrictions by performing meeting operations after account deactivation, aka Bug ID CSCuh33315.
http://www.securityfocus.com/bid/61572
http://tools.cisco.com/security/center/viewAlert.x?alertId=30277
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-3448