CVE-2021-25673

Name of the Vulnerable Software and Affected Versions SIMATIC S7-PLCSIM V5.4 (All versions)

Description A Denial-of-Service condition can be caused in the application by an attacker with local access to the system when it is used to open a specially crafted file. As a consequence, the application could enter an infinite loop, become unresponsive, and must be restarted to restore the service.

Recommendations For SIMATIC S7-PLCSIM V5.4, avoid opening specially crafted files until a patch is available. As a temporary workaround, consider restarting the application to restore service in case it becomes unresponsive due to the Denial-of-Service condition.