Check Point Zone Labs ZoneAlarm Internet Security Suite 6.5.722.000 6.1.737.000 and possibly other versions do not properly validate RegSaveKey RegRestoreKey and RegDeleteKey function calls which allows local users to cause a denial of service (system crash) via a certain combination of these function calls with an HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\VETFDDNT\\Enum argument.