Directory traversal vulnerability in HmiLoad in the runtime loader 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 when Transfer Mode is enabled allows remote attackers to execute read create modify or delete arbitrary files via a .. (dot dot) in a string.