CVE-2021-25674: Null Pointer Dereference
First published: Mon Mar 15 2021(Updated: )
A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 (All versions). An attacker with local access to the system could cause a Denial-of-Service condition in the application when it is used to open a specially crafted file. As a consequence, a NULL pointer deference condition could cause the application to terminate unexpectedly and must be restarted to restore the service.
Credit: productcert@siemens.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SIMATIC S7-PLCSIM | =5.4 |
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Frequently Asked Questions
What is the severity of CVE-2021-25674?
CVE-2021-25674 has a severity rating of medium, indicating a potential impact on the application's availability.
How do I fix CVE-2021-25674?
To fix CVE-2021-25674, ensure that you are using a patched version of SIMATIC S7-PLCSIM that addresses the vulnerability.
What systems are affected by CVE-2021-25674?
CVE-2021-25674 affects all versions of SIMATIC S7-PLCSIM V5.4.
What kind of attack is possible with CVE-2021-25674?
An attacker with local access can trigger a Denial-of-Service condition by opening a specially crafted file.
Is local access required for CVE-2021-25674 exploitation?
Yes, CVE-2021-25674 requires local access to the system for exploitation.
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