SSA-617264 (Last Update: 2020-04-13): Multiple Security Vulnerabilities in SIMATIC S7-400 V5 PN CPUs


2020-04-13 00:00:00 UTC


When receiving malformed network data, SIMATIC S7-400 V5 PN CPUs may go into defect mode. This would allow attackers to perform a Denial-of-Service attack on the CPUs.

Siemens will not publish a fix for this vulnerability as this product version is discontinued since October 2011 [1]. Version V6 is not affected by these specific problems. [1]