Home/CVE/Missing synchronization vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.39
CVE

CVE-2021-20592

Missing synchronization vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.39

Missing synchronization vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.39.010, GT25 model communication driver versions 01.19.000 through 01.39.010 and GT23 model communication driver versions 01.19.000 through 01.39.010 and GT SoftGOT2000 versions 1.170C through 1.256S allows a remote unauthenticated attacker to cause DoS condition on the MODBUS/TCP slave communication function of the products by rapidly and repeatedly connecting and disconnecting to and from the MODBUS/TCP communication port on a target. Restart or reset is required to recover.

HIGH · CVSS 7.5 EPSS 0.00388
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-662Improper Synchronization
▤

Affected Products & Versions

4
mitsubishielectric gt softgot2000>= 1.170c and <= 1.256s
mitsubishielectric got2000 gt27 firmware>= 01.19.000 and <= 01.39.010
mitsubishielectric got2000 gt25 firmware>= 01.19.000 and <= 01.39.010
mitsubishielectric got2000 gt23 firmware>= 01.19.000 and <= 01.39.010
▣

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 NVD05 Aug 2021 · 09:15 PM
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-21-208-02
🔗

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/JVNVU92414172/index.html
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-007_en.pdf
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