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Txpert Hub Coretec 4 FirmwareOperating system · Hitachienergy

CVE-2021-35531

MEDIUM · 6.7 CVSS v3.1 Published 2022-06-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper Input Validation vulnerability in a particular configuration setting field of Hitachi Energy TXpert Hub CoreTec 4 product, allows an attacker with access to an authorized user with ADMIN or ENGINEER role rights to inject an OS command that is executed by the system. This issue affects: Hitachi Energy TXpert Hub CoreTec 4 version 2.0.0; 2.0.1; 2.1.0; 2.1.1; 2.1.2; 2.1.3; 2.2.0; 2.2.1.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

OS command injection vulnerability in TXpert Hub CoreTec 4 configuration settings. An authenticated user with ADMIN or ENGINEER role can inject and execute arbitrary OS commands through a particular configuration field due to improper input validation.

MitigationApply vendor-provided patches for affected versions. Until patch available, restrict administrative access, implement strict input validation/sanitization on configuration fields, and monitor for suspicious command execution.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Txpert Hub Coretec 4 FirmwareOperating system
Affected:= 2.0.0= 2.0.1= 2.1.0= 2.1.1= 2.1.2= 2.1.3= 2.2.0= 2.2.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed firmware version
    Access the TXpert Hub CoreTec 4 web interface or system information panel and locate the firmware version number. This is typically found in Settings > System > About or similar administration page.
    Affected if The installed version matches 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.2.0, or 2.2.1 exactly.
  2. Verify user role configuration
    Check the user management section of the TXpert Hub administration panel to see which roles are assigned to users. Look for users with ADMIN or ENGINEER privileges.
    Affected if Any user account has ADMIN or ENGINEER role assigned and can access configuration settings.
  3. Locate vulnerable configuration field
    Navigate to the configuration settings area where OS-level parameters can be set. This may be in network settings, system configuration, or advanced settings where command strings could be injected.
    Affected if The configuration interface accepts and saves input fields that allow direct OS command syntax without apparent sanitization.
  4. Review access logs for suspicious commands
    Examine system logs, audit logs, or command execution logs for entries containing unusual command patterns, shell metacharacters, or unexpected system calls originating from the TXpert Hub interface.
    Affected if Logs show execution of commands or system calls that were not explicitly intended or that contain injected syntax.

You are affected if your TXpert Hub CoreTec 4 firmware version is exactly 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.2.0, or 2.2.1 AND you have users with ADMIN or ENGINEER role who can access vulnerable configuration fields.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor-provided patches for affected versions. Until patch available, restrict administrative access, implement strict input validation/sanitization on configuration fields, and monitor for suspicious command execution.

Recommended fix Moderate confidence

Upgrade to firmware version 2.2.2 or later (contact Hitachi Energy for exact patched version)

  1. 1. Identify the current firmware version of the Hitachi Energy TXpert Hub CoreTec 4 device
  2. 2. Contact Hitachi Energy customer support or refer to their official security advisories to obtain the patched firmware version
  3. 3. Download the patched firmware from the official Hitachi Energy (ABB) support portal at search.abb.com
  4. 4. Follow the official firmware upgrade procedure documented in the TXpert Hub CoreTec 4 installation manual
  5. 5. Ensure the upgrade is performed by a user with ADMIN privileges
  6. 6. After upgrade, verify the specific configuration setting field no longer accepts OS command injection
  7. 7. Confirm the patched version is 2.2.2 or later as indicated in Hitachi Energy's security advisory
Caveat Review release notes for any configuration or feature changes between current and patched version

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Txpert Hub Coretec 4 Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-35531 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data