The vulnerability of the Modbus terminal protocol implementation in the EKRA 200 microprocessor series allows a hacker to execute any Modbus command and alter the controller’s configuration, including modifying the control program and executing arbitrary code.

The vulnerability of the Modbus microprogramming software for ECUs exists due to the lack of authentication for any Modbus protocol commands. Exploiting this vulnerability allows a malicious actor to execute any Modbus command remotely and alter the controller’s configuration, including modifying...