SSA-724606 (Last Update: 2020-02-10): Denial-of-Service Vulnerabilities in SIMATIC S7-1200 CPU Family


2020-02-10 00:00:00 UTC


Siemens SIMATIC S7-1200 PLCs, version 2 and higher, allow device management over TCP port 102 (ISO-TSAP) and retrieving status information over UDP port 161 (SNMP). It is possible to cause the device to go into defect mode by sending specially crafted packets to these ports.

Siemens addresses these issues with the newest product release.