SSA-584286 (Last Update: 2019-03-12): Denial-of-Service Vulnerability in SIMATIC S7-1200 CPU and SIMATIC S7-1500 CPU


2019-03-12 00:00:00 UTC


A vulnerability was identified in SIMATIC S7-1200 and S7-1500 CPUs that could allow an attacker to cause a denial-of-service condition preventing HMI or engineering access to the PLC over port 102/tcp.

Siemens has released an update for the S7-1500 product and recommends that customers update to the new version. Siemens is preparing a further update for the S7-1200 product and recommends specific workarounds and mitigations until patches are available.