What is the severity of CVE-2021-36765?

CVE-2021-36765 is classified as a medium severity vulnerability.

What types of systems are affected by CVE-2021-36765?

CVE-2021-36765 affects CODESYS EtherNetIP versions prior to 4.1.0.0.

How do I fix CVE-2021-36765?

The fix for CVE-2021-36765 is to upgrade CODESYS EtherNetIP to version 4.1.0.0 or later.

What is the impact of CVE-2021-36765 on the system?

CVE-2021-36765 can lead to a null pointer dereference that may cause application crashes.

Are there any workarounds for CVE-2021-36765?

There are currently no official workarounds available for CVE-2021-36765.

Vulnerability/
CVE-2021-36765

high

7.5

CWE

476

4/8/2021

4/8/2024

CVE-2021-36765: Null Pointer Dereference

First published: Wed Aug 04 2021(Updated: )

In CODESYS EtherNetIP before 4.1.0.0, specific EtherNet/IP requests may cause a null pointer dereference in the downloaded vulnerable EtherNet/IP stack that is executed by the CODESYS Control runtime system.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
CODESYS EtherNetIP	<4.1.0.0

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Reference Links

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16806&token=3b0c51de5a6e35bccbb413ddaaa56551ca5490f6&download=

Frequently Asked Questions

What is the severity of CVE-2021-36765?
CVE-2021-36765 is classified as a medium severity vulnerability.
What types of systems are affected by CVE-2021-36765?
CVE-2021-36765 affects CODESYS EtherNetIP versions prior to 4.1.0.0.
How do I fix CVE-2021-36765?
The fix for CVE-2021-36765 is to upgrade CODESYS EtherNetIP to version 4.1.0.0 or later.
What is the impact of CVE-2021-36765 on the system?
CVE-2021-36765 can lead to a null pointer dereference that may cause application crashes.
Are there any workarounds for CVE-2021-36765?
There are currently no official workarounds available for CVE-2021-36765.

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Frequently Asked Questions

What is the severity of CVE-2021-36765?
CVE-2021-36765 is classified as a medium severity vulnerability.
What types of systems are affected by CVE-2021-36765?
CVE-2021-36765 affects CODESYS EtherNetIP versions prior to 4.1.0.0.
How do I fix CVE-2021-36765?
The fix for CVE-2021-36765 is to upgrade CODESYS EtherNetIP to version 4.1.0.0 or later.
What is the impact of CVE-2021-36765 on the system?
CVE-2021-36765 can lead to a null pointer dereference that may cause application crashes.
Are there any workarounds for CVE-2021-36765?
There are currently no official workarounds available for CVE-2021-36765.