Siemens SIMATIC S7-1200 CPUs Denial-of-Service Vulnerability

A denial-of-service vulnerability has been identified in various models of the Siemens SIMATIC S7-1200 CPU family, all versions prior to 4.7. The issue arises from the CPUs' improper handling of certain specially crafted packets sent to port 102/tcp. This mismanagement can allow an attacker to disrupt the normal operation of the device, causing a denial-of-service condition.

Impact

Exploitation of this vulnerability leads to a denial-of-service condition, causing the affected device to become unresponsive or unavailable.

Remediation

Users are advised to update to version 4.7 or later. For guidance on the update process, refer to the Siemens support page.