CVE-2021-20592

HIGH
7.5
CVSS Score
Published: August 5, 2021 at 08:46 PM UTC
Updated: June 17, 2026 at 03:34 AM UTC
10 products affected across 1 vendorGT SoftGOT2000GOT2000 GT27 FirmwareGOT2000 GT25 Firmware

Using GOT2000 series GT27 model; GT25 model; GT23 model; GT SoftGOT2000 by N/A?

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

01.19.000 ≤ v ≤ 01.39.010
mitsubishielectric-got2000-gt23 (same device)
01.19.000 ≤ v ≤ 01.39.010
mitsubishielectric-got2000-gt25 (same device)
01.19.000 ≤ v ≤ 01.39.010
mitsubishielectric-got2000-gt27 (same device)
v ≤ 1.256Sv ≤ 1.39.0101.170c ≤ v ≤ 1.256s
v ≤ 1.256Sv ≤ 1.39.010
v ≤ 1.256Sv ≤ 1.39.010
v ≤ 1.256Sv ≤ 1.39.010

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-662

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