CVE-2021-35534
HIGHEPSS 75th pctlDescription
Insufficient security control vulnerability in internal database access mechanism of Hitachi Energy Relion 670/650/SAM600-IO, Relion 650, GMS600, PWC600 allows attacker who successfully exploited this vulnerability, of which the product does not sufficiently restrict access to an internal database tables, could allow anybody with user credentials to bypass security controls that is enforced by the product. Consequently, exploitation may lead to unauthorized modifications on data/firmware, and/or to permanently disabling the product. This issue affects: Hitachi Energy Relion 670 Series 2.0 all revisions; 2.2.2 all revisions; 2.2.3 versions prior to 2.2.3.5. Hitachi Energy Relion 670/650 Series 2.1 all revisions. 2.2.0 all revisions; 2.2.4 all revisions; Hitachi Energy Relion 670/650/SAM600-IO 2.2.1 all revisions; 2.2.5 versions prior to 2.2.5.2. Hitachi Energy Relion 650 1.0 all revisions. 1.1 all revisions; 1.2 all revisions; 1.3 versions prior to 1.3.0.8; Hitachi Energy GMS600 1.3.0; 1.3.0.1; 1.2.0. Hitachi Energy PWC600 1.0.1 version 1.0.1.4 and prior versions; 1.1.0 version 1.1.0.1 and prior versions.
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:H/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 75% of all known CVEs.
References
Related Vulnerabilities
Other CWE-274 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2025-20156 | Critical | 9.9 | 1.2% | - | Fix |
| CVE-2023-35928 | High | 8.4 | 1.0% | - | Fix |
| CVE-2022-45101 | High | 7.3 | 0.8% | - | Fix |
| CVE-2021-32006 | Medium | 5.0 | 0.6% | - | - |
| CVE-2022-0668 | Medium | 5.3 | 0.6% | - | Fix |
| CVE-2023-39375 | High | 7.5 | 0.6% | - | Fix |
Common questions
How do I fix CVE-2021-35534?
No published fix for CVE-2021-35534 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2021-35534 being actively exploited?
Not that we know of. CVE-2021-35534 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 75% of all scored CVEs.
How severe is CVE-2021-35534?
CVE-2021-35534 has a CVSS v3 base score of 7.2, 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.