Security readout for executives and security teams
Plain-English summary
CVE-2021-35531 is an OS command injection issue in Hitachi Energy TXpert Hub CoreTec 4. A person who can access an authorized ADMIN or ENGINEER account could abuse a configuration setting to make the system execute commands. This is serious for affected deployments, but the bundle does not show active exploitation or a confirmed patch level.
Executive priority
Prioritize environments where affected TXpert Hub systems support operational technology or critical transformer monitoring workflows. The issue needs prompt validation because privileged account misuse could lead to command execution.
Technical view
The CVE describes improper input validation, mapped to CWE-20, in a specific configuration setting field. Affected TXpert Hub CoreTec 4 versions are 2.0.0, 2.0.1, 2.1.0 through 2.1.3, 2.2.0, and 2.2.1. Exploitation requires access through an authorized ADMIN or ENGINEER role account.
Likely exposure
Exposure is likely limited to organizations running the listed TXpert Hub CoreTec 4 versions where ADMIN or ENGINEER users can reach the vulnerable configuration setting.
Exploitation context
The provided bundle does not identify active exploitation, public exploit activity, or KEV listing. The attack context is authenticated and privileged, but successful abuse results in system command execution.
Researcher notes
Evidence is limited to the CVE description and referenced vendor advisory. No CVSS vector, exploit maturity, patch version, or detailed affected configuration field is present in the provided bundle, so validation should remain non-invasive and vendor-guided.
Mitigation direction
- Identify all TXpert Hub CoreTec 4 deployments and versions.
- Treat versions 2.0.0 through 2.2.1 listed in the CVE as affected.
- Check Hitachi Energy or ABB advisory guidance for fixed versions or compensating controls.
- Restrict ADMIN and ENGINEER access to trusted personnel only.
- Review privileged account security and remove unnecessary role assignments.
Validation and detection
- Confirm whether TXpert Hub CoreTec 4 is deployed in the environment.
- Record the exact CoreTec 4 version on each deployed system.
- Review ADMIN and ENGINEER role assignments for unnecessary access.
- Check logs or configuration audit records for suspicious privileged configuration changes.
- Verify remediation decisions against the referenced vendor advisory.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-35531 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.