<p>SENTRON PAC3200 only provide a 4-digit PIN to protect from administrative access via Modbus TCP interface. Attackers with access to the Modbus TCP interface could easily bypass this protection by brute-force attacks or by monitoring the Modbus cleartext communication.</p>
<p>Siemens recommends specific countermeasures for products where fixes are not, or not yet available.</p>
Source link
