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CVE-2021-20601

7.5 · HIGH

Improper input validation vulnerability in GOT2000 series GT27 model all versions, GOT2000 series GT25 model all versions, GOT2000 series GT23 model all versions, GOT2000 series GT21 model all vers…

Published Nov 23, 2021CWE-20EPSS 2.43%

Overview

CVE-2021-20601 is a high-severity vulnerability. It was published on November 23, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Improper input validation vulnerability in GOT2000 series GT27 model all versions, GOT2000 series GT25 model all versions, GOT2000 series GT23 model all versions, GOT2000 series GT21 model all versions, GOT SIMPLE series GS21 model all versions, and GT SoftGOT2000 all versions allows an remote unauthenticated attacker to write a value that exceeds the configured input range limit by sending a malicious packet to rewrite the device value. As a result, the system operation may be affected, such as malfunction.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refjvn.jp/vu/JVNVU98072504CISAus-cert.cisa.gov/ics/advisories/icsa-21-320-02Refwww.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2021-018.pdfRefjvn.jp/vu/JVNVU98072504CISAus-cert.cisa.gov/ics/advisories/icsa-21-320-02Refwww.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2021-018.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2021-20601?

CVE-2021-20601 is a high-severity vulnerability. It was published on November 23, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-20601?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-20601?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-20601?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-20601 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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