Siemens CP-XXXX Series Exposed Serial Shell

Siemens CP-XXXX Series (CP-2014, CP-2016, CP-2017, CP-2019, CP-5014) expose serial shells on multiple PLCs. A serial interface can be accessed with physical access to the PCB. After connecting to the interface, access to a shell with various debug functions as well as a login prompt is possible. The hardware is no longer produced nor offered to the market.