SpiderControl PLC Editor Simatic suffers from an elevation of privileges vulnerability which can be used by a simple user that can change the executable file with a binary of choice. The vulnerability exist due to the improper permissions, with the ‘F’ flag (Full) for ‘Everyone’ group, and ‘C’ flag (Change) for ‘Authenticated Users’ group making the entire directory ‘PLCEditorSimatic_6300400’ and its files and sub-dirs world-writable. Version 6.30.04 is affected.