CVE-2021-20592
HIGHEPSS 72th pctlDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 72% of all known CVEs.
References
Related Vulnerabilities
Other CWE-662 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-7457 | High | 8.1 | 33% | - | - |
| CVE-2020-14059 | Medium | 6.5 | 4.4% | - | Fix |
| CVE-2018-15555 | Critical | 9.8 | 3.0% | - | - |
| CVE-2016-8368 | High | 8.6 | 2.6% | - | - |
| CVE-2019-17185 | High | 7.5 | 2.2% | - | Fix |
| CVE-2022-1931 | High | 8.1 | 2.0% | - | Fix |
Common questions
How do I fix CVE-2021-20592?
No published fix for CVE-2021-20592 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2021-20592 being actively exploited?
Not that we know of. CVE-2021-20592 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 72% of all scored CVEs.
How severe is CVE-2021-20592?
CVE-2021-20592 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.