Home/CVE/Buffer access with incorrect length value vulnerability in GOT2000 series GT27 model communication driver versions 01.19
CVE

CVE-2021-20589

Buffer access with incorrect length value vulnerability in GOT2000 series GT27 model communication driver versions 01.19

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.

HIGH · CVSS 7.5 EPSS 0.00326
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

6
mitsubishi gt27 firmware>= 01.19.000 and <= 01.38.000
mitsubishi gt25 firmware>= 01.19.000 and <= 01.38.000
mitsubishi gt23 firmware>= 01.19.000 and <= 01.38.000
mitsubishi gt21 firmware>= 01.21.000 and <= 01.39.000
mitsubishi gs21 firmware>= 01.21.000 and <= 01.39.000
mitsubishi gt softgot2000 firmware>= 1.170c and <= 1.250l
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 May 2021 · 11:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-131-02
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://jvn.jp/vu/JVNVU99895108/index.html
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-002_en.pdf
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