Siemens SIMATIC STEP 7 and SIMATIC WinCC (Update A)
Improper file permissions in the default installation of TIA Portal may allow an attacker with local file system access to insert specially crafted files which may prevent TIA Portal startup (Denial-of-Service) or lead to local code execution. No special privileges are required, but the victim needs to attempt to start TIA Portal after the manipulation. At the time of advisory publication no public exploitation of this security vulnerability was known. Improper file permissions in the default installation of TIA Portal may allow an attacker with local file system access to manipulate ressources which may be transferred to devices and executed there by a different user. No special privileges are required, but the victim needs to transfer the manipulated files to a device. Execution is caused on the target device rather than on the PG device. At the time of advisory publication no public exploitation of this security vulnerability was known.