CVE-2021-20589: Buffer Overflow
First published: Wed May 19 2021(Updated: )
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.
Credit: vultures@jpcert.or.jp
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mitsubishi Electric GT27 Firmware | >=01.19.000<=01.38.000 | |
| Mitsubishi GT27 Firmware | ||
| Mitsubishi GT25 Firmware | >=01.19.000<=01.38.000 | |
| Mitsubishi GT25 Firmware | ||
| Mitsubishi GT23 | >=01.19.000<=01.38.000 | |
| Mitsubishi Electric GOT2000 GT23 | ||
| Mitsubishi Electric GT21 Firmware | >=01.21.000<=01.39.000 | |
| Mitsubishi GT21 Firmware | ||
| Mitsubishi Gs21 | >=01.21.000<=01.39.000 | |
| Mitsubishi Gs21 Firmware | ||
| Mitsubishi GT SoftGOT2000 | >=1.170c<=1.250l | |
| Mitsubishi Electric GT SoftGOT2000 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-20589?
CVE-2021-20589 is a buffer access with incorrect length value vulnerability in Mitsubishi GT2000 series GT27, GT25, GT23, and GT21 model communication drivers.
What is the severity of CVE-2021-20589?
CVE-2021-20589 has a severity score of 7.5 (high).
Which software versions are affected by CVE-2021-20589?
CVE-2021-20589 affects 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.
How can I fix CVE-2021-20589?
To fix CVE-2021-20589, it is recommended to update the Mitsubishi GT2000 series GT27, GT25, GT23, and GT21 model communication drivers to versions that are not affected by the vulnerability.
Where can I find more information about CVE-2021-20589?
More information about CVE-2021-20589 can be found at the following references: [CVE-2021-20589](https://jvn.jp/vu/JVNVU99895108/index.html), [Mitsubishi Electric PSIRT Vulnerability PDF](https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-002_en.pdf).
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/weakness
- agent/author
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/mitsubishi
- canonical/mitsubishi electric gt27 firmware
- version/mitsubishi electric gt27 firmware/01.19.000
- version/mitsubishi electric gt27 firmware/01.38.000
- canonical/mitsubishi gt27 firmware
- canonical/mitsubishi gt25 firmware
- version/mitsubishi gt25 firmware/01.19.000
- version/mitsubishi gt25 firmware/01.38.000
- canonical/mitsubishi gt23
- version/mitsubishi gt23/01.19.000
- version/mitsubishi gt23/01.38.000
- canonical/mitsubishi electric got2000 gt23
- canonical/mitsubishi electric gt21 firmware
- version/mitsubishi electric gt21 firmware/01.21.000
- version/mitsubishi electric gt21 firmware/01.39.000
- canonical/mitsubishi gt21 firmware
- canonical/mitsubishi gs21
- version/mitsubishi gs21/01.21.000
- version/mitsubishi gs21/01.39.000
- canonical/mitsubishi gs21 firmware
- canonical/mitsubishi gt softgot2000
- version/mitsubishi gt softgot2000/1.170c
- version/mitsubishi gt softgot2000/1.250l
- canonical/mitsubishi electric gt softgot2000