AUGUST 4, 2026
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Case File

CVE-2021-20592

HIGH · CVSS 7.5 EPSS 1.50%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-05 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It may be remotely exploitable. Exploitation may require the attacker to be authenticated.

CVE
CVE-2021-20592
Severity
HIGH
CVSS
7.5
EPSS
1.50%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)