What is the severity of CVE-2021-30191?

CVE-2021-30191 is classified as a medium severity vulnerability due to potential buffer overflow risks.

How do I fix CVE-2021-30191?

To remediate CVE-2021-30191, update the CODESYS V2 Web-Server to version 1.1.9.20 or later.

What impact does CVE-2021-30191 have on systems?

CVE-2021-30191 can lead to potential arbitrary code execution if exploited by an attacker.

Is CVE-2021-30191 remotely exploitable?

Yes, CVE-2021-30191 can be exploited remotely if the vulnerable web server is exposed.

What software versions are affected by CVE-2021-30191?

CVE-2021-30191 affects all versions of CODESYS V2 Web-Server prior to 1.1.9.20.

Vulnerability/
CVE-2021-30191

high

7.5

CWE

120

25/5/2021

3/8/2024

CVE-2021-30191

First published: Tue May 25 2021(Updated: )

CODESYS V2 Web-Server before 1.1.9.20 has a a Buffer Copy without Checking the Size of the Input.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Codesys V2 Web Server	<1.1.9.20

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Frequently Asked Questions

What is the severity of CVE-2021-30191?
CVE-2021-30191 is classified as a medium severity vulnerability due to potential buffer overflow risks.
How do I fix CVE-2021-30191?
To remediate CVE-2021-30191, update the CODESYS V2 Web-Server to version 1.1.9.20 or later.
What impact does CVE-2021-30191 have on systems?
CVE-2021-30191 can lead to potential arbitrary code execution if exploited by an attacker.
Is CVE-2021-30191 remotely exploitable?
Yes, CVE-2021-30191 can be exploited remotely if the vulnerable web server is exposed.
What software versions are affected by CVE-2021-30191?
CVE-2021-30191 affects all versions of CODESYS V2 Web-Server prior to 1.1.9.20.

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Frequently Asked Questions

What is the severity of CVE-2021-30191?
CVE-2021-30191 is classified as a medium severity vulnerability due to potential buffer overflow risks.
How do I fix CVE-2021-30191?
To remediate CVE-2021-30191, update the CODESYS V2 Web-Server to version 1.1.9.20 or later.
What impact does CVE-2021-30191 have on systems?
CVE-2021-30191 can lead to potential arbitrary code execution if exploited by an attacker.
Is CVE-2021-30191 remotely exploitable?
Yes, CVE-2021-30191 can be exploited remotely if the vulnerable web server is exposed.
What software versions are affected by CVE-2021-30191?
CVE-2021-30191 affects all versions of CODESYS V2 Web-Server prior to 1.1.9.20.