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CVE-2021-20608

7.5 · HIGH

Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric GX Works2 versions 1.606G and prior allows a remote unauthenticated attacker to cause a DoS condition in GX…

Published Dec 17, 2021EPSS 2.88%

Overview

CVE-2021-20608 is a high-severity vulnerability. It was published on December 17, 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 Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric GX Works2 versions 1.606G and prior allows a remote unauthenticated attacker to cause a DoS condition in GX Works2 by getting GX Works2 to read a tampered program file from a Mitsubishi Electric PLC by sending malicious crafted packets to tamper with the program file.

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/JVNVU93019896/index.htmlCISAus-cert.cisa.gov/ics/advisories/icsa-21-350-04Refwww.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-020_en.pdfRefjvn.jp/vu/JVNVU93019896/index.htmlCISAus-cert.cisa.gov/ics/advisories/icsa-21-350-04Refwww.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-020_en.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2021-20608?

CVE-2021-20608 is a high-severity vulnerability. It was published on December 17, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-20608?

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-2021-20608?

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-2021-20608?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-20608 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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