CVE-2021-20592

HIGH

MODBUS/TCP - DoS

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 7.5
EPSS 0.0039
EPSS Percentile 59.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-662
Status published
Products (4)
mitsubishielectric/got2000_gt23_firmware 01.19.000 - 01.39.010
mitsubishielectric/got2000_gt25_firmware 01.19.000 - 01.39.010
mitsubishielectric/got2000_gt27_firmware 01.19.000 - 01.39.010
mitsubishielectric/gt_softgot2000 1.170c - 1.256s
Published Aug 05, 2021
Tracked Since Feb 18, 2026