CVE-2021-25675 : What You Need to Know

A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 that could lead to a Denial-of-Service condition. An attacker with local access could exploit this vulnerability by opening a specially crafted file, leading to a divide by zero operation and application termination.

Understanding CVE-2021-25675

This section will provide insights into the nature and impact of the CVE-2021-25675 vulnerability.

What is CVE-2021-25675?

The CVE-2021-25675 vulnerability exists in SIMATIC S7-PLCSIM V5.4, allowing a local attacker to trigger a Denial-of-Service by manipulating a file operation.

The Impact of CVE-2021-25675

Exploitation of this vulnerability could result in the application unexpectedly terminating, requiring a restart to resume normal service.

Technical Details of CVE-2021-25675

Explore the specifics of the vulnerability to understand its implications and operational aspects.

Vulnerability Description

A flaw in SIMATIC S7-PLCSIM V5.4 could enable a local attacker to cause a divide by zero operation, leading to a Denial-of-Service situation.

Affected Systems and Versions

All versions of the SIMATIC S7-PLCSIM V5.4 are impacted by this vulnerability, leaving systems exposed to the risk of application failure.

Exploitation Mechanism

By coercing the application to open a specially crafted file, an attacker can exploit a flaw to trigger the divide by zero operation.

Mitigation and Prevention

Learn how to mitigate the risks posed by CVE-2021-25675 and safeguard your systems.

Immediate Steps to Take

Ensure system administrators are aware of the vulnerability and take necessary precautions to avoid exploitation.

Long-Term Security Practices

Implement robust security protocols and access controls to prevent unauthorized access and subsequent exploitation of vulnerabilities.

Patching and Updates

Stay informed about security patches released by Siemens to address the CVE-2021-25675 vulnerability.