CVE-2021-35534

Insufficient Security Control Vulnerability

HIGH
7.2
CVSS Score
Published: November 18, 2021 at 04:35 PM UTC
Updated: June 17, 2026 at 03:57 AM UTC
10 products affected across 1 vendorRelion 670 FirmwareRelion 650 FirmwareRelion Sam600-io Firmware

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Severity
HIGH7.2
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.0.1 ≤ v ≤ 1.0.1.41.1.0 ≤ v ≤ 1.1.0.11.0.11.0.1.01.0.1.11.0.1.31.0.1.41.1.01.1.0.01.1.0.1
hitachienergy-pwc600 (same device)
hitachienergy-relion-sam600-io (same device)
Affected range stops below 1.3.0.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.5.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.3.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.5.2, so it looks safe — our inference, not a vendor statement
2.2.5 ≤ v < 2.2.5.22.2.1 all revisions2.2.5
Affected range stops below 2.2.5.2, so it looks safe — our inference, not a vendor statement
All versions
All versions

CVSS

7.2HIGHHitachi Energy
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-274CWE-269

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