CVE-2021-35534
Insufficient Security Control Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- Hitachi Energy
Description
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.
Timeline
ID reserved
By Hitachi Energy
- 5 months later
· 5 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| Hitachi EnergyCNA (assigner) | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.8% · top 21% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Weakness
Affected products
Hitachi Energy · Relion 670 Series
- affected 2.0 all revisions
- affected 2.2.2 all revisions
- affected 2.2.3 – < 2.2.3.5
Hitachi Energy · Relion 670/650 Series
- affected 2.2.0 all revisions
- affected 2.2.4 all revisions
- affected 2.1 all revisions
Hitachi Energy · Relion 670/650/SAM600-IO
- affected 2.2.1 all revisions
- affected 2.2.5 – < 2.2.5.2
- affected 1.1 all revisions
- affected 1.2 all revisions
- affected 1.0 all revisions
- affected 1.3 – < 1.3.0.8
- affected 1.3.0
- affected 1.3.1.0 1.3.0.1
- affected 1.2.0
- affected 1.0.1 – ≤ 1.0.1.4
- affected 1.1.0 – ≤ 1.1.0.1
What to do
Solution: Refer to the cybersecurity advisories at https://www.hitachienergy.com/cybersecurity/alerts-and-notifications
References (3)
- https://search.abb.com/library/Download.aspx?DocumentID=8DBD000058&LanguageCode=en&DocumentPartId=&Action=Launch (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://search.abb.com/library/Download.aspx?DocumentID=8DBD000059&LanguageCode=en&DocumentPartId=&Action=Launch (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://search.abb.com/library/Download.aspx?DocumentID=8DBD000060&LanguageCode=en&DocumentPartId=&Action=Launch (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-35534)Record last updated .