CVE-2011-4509: Undefined Security Weakness

The HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 aka TIA portal; the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime has an improperly selected default password for the administrator account...