Denial-of-Service Vulnerability in SIMATIC S7-PLCSIM by Siemens

CVE-2021-25674

Summary

A significant vulnerability exists in SIMATIC S7-PLCSIM that could be exploited by an attacker with local access. By opening a specially crafted file, this vulnerability may lead to a Denial-of-Service condition, resulting in an unexpected termination of the application due to a NULL pointer dereference. To resume operations, the application would require a restart. This issue affects all versions of SIMATIC S7-PLCSIM V5.4, highlighting the need for immediate attention to secure the operational environment.

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