A vulnerability has been identified in SENTRON 3KC ATC6 Expansion Module Ethernet (3KC9000-8TL75) (All versions). Affected devices expose an unused, unstable http service at port 80/tcp on the Modbus-TCP Ethernet. This could allow an attacker on the same Modbus network to create a denial of service condition that forces the device to reboot.
The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product’s users or administrators.