CVE-2021-20589
7.5 · HIGHOverview
CVE-2021-20589 is a high-severity vulnerability affecting mitsubishi gt27_firmware. It was published on May 19, 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
Buffer access with incorrect length value vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.38.000, GT25 model communication driver versions 01.19.000 through 01.38.000, GT23 model communication driver versions 01.19.000 through 01.38.000 and GT21 model communication driver versions 01.21.000 through 01.39.000, GOT SIMPLE series GS21 model communication driver versions 01.21.000 through 01.39.000, GT SoftGOT2000 versions 1.170C through 1.250L and Tension Controller LE7-40GU-L Screen package data for MODBUS/TCP V1.00 allows a remote unauthenticated attacker to stop the communication function of the products via specially crafted packets.
Remediation
Check the references section for vendor advisories and patches from mitsubishi. Update gt27_firmware to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| mitsubishi | gt27_firmware | 01.19.000 | Affected |
| mitsubishi | gt25_firmware | 01.19.000 | Affected |
| mitsubishi | gt23_firmware | 01.19.000 | Affected |
| mitsubishi | gt21_firmware | 01.21.000 | Affected |
| mitsubishi | gs21_firmware | 01.21.000 | Affected |
| mitsubishi | gt_softgot2000_firmware | 1.170c | Affected |
Frequently Asked Questions
What is CVE-2021-20589?
CVE-2021-20589 is a high-severity vulnerability affecting mitsubishi gt27_firmware. It was published on May 19, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-20589?
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-2021-20589?
Check the references section for vendor advisories and patches from mitsubishi. Update gt27_firmware to the latest patched version. 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-2021-20589?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20589 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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