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Vulnerability record · CVE-2021-35534 · published 18 November 2021

CVE-2021-35534: Hitachienergy gms600 firmware improper privilege management vulnerability

Hitachienergy · Gms600 Firmware

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.

7.2 CVSS 3.1 High EPSS 1.8% · top 22.5% CWE-274 · CWE-274CWE-269 · Improper privilege management
7.2CVSS 3.1 base score, v2 9.0
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000058&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000059&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000060&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000058&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000059&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000060&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2019-18253Hitachienergy relion 670 firmware path traversal vulnerabilityAn attacker could use specially crafted paths in a specific request to read or delete files from Relion 670 Series (versions 1p1r26, 1.2.3.17, 2.0.0.…EPSS 2.0%8.1CVE-2021-35535Hitachienergy relion 670 firmware insecure default initialization vulnerabilityInsecure Boot Image vulnerability in Hitachi Energy Relion Relion 670/650/SAM600-IO series allows an attacker who manages to get access to the front …EPSS 0.67%7.5CVE-2023-4518Hitachienergy relion 670 firmware vulnerabilityA vulnerability exists in the input validation of the GOOSE messages where out of range values received and processed by the IED caused a reboot of t…EPSS 0.70%7.5CVE-2022-3353Hitachienergy sys600 firmware improper resource shutdown vulnerabilityA vulnerability exists in the IEC 61850 communication stack that affects multiple Hitachi Energy products.  An attacker could exploit the vulnerabili…EPSS 1.1%7.5CVE-2021-27196Hitachienergy relion 670 firmware improper input validation vulnerabilityImproper Input Validation vulnerability in Hitachi ABB Power Grids Relion 670 Series, Relion 670/650 Series, Relion 670/650/SAM600-IO, Relion 650, RE…EPSS 1.6%7.5CVE-2019-18247Hitachienergy relion 650 firmware improper input validation vulnerabilityAn attacker may use a specially crafted message to force Relion 650 series (versions 1.3.0.5 and prior) or Relion 670 series (versions 1.2.3.18, 2.0.…EPSS 1.6%4.5CVE-2022-3864Hitachienergy relion 650 firmware improper verification of cryptographic signature vulnerabilityA vulnerability exists in the Relion update package signature validation. A tampered update package could cause the IED to restart. After restart the…EPSS 0.35%

Source: NIST National Vulnerability Database (record CVE-2021-35534), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.