The vulnerability of the Modbus protocol implementation in microprogrammed software for programmable logic controllers like Modicon Quantum allows a intruder to trigger malfunctions in the equipment or unauthorized changes to its configuration.

The vulnerability of the Modbus protocol implementation in microprogrammed logic controllers like Modicon Quantum is related to errors in privilege management. Exploiting this vulnerability could allow an attacker to cause service failures or unauthorized changes to the PLC’s configuration...