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Txpert Hub Coretec 4 FirmwareOperating system · Hitachienergy

CVE-2021-35530

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
A vulnerability in the application authentication and authorization mechanism in Hitachi Energy's TXpert Hub CoreTec 4, that depends on a token validation of the session identifier, allows an unauthorized modified message to be executed in the server enabling an unauthorized actor to change an existing user password, and further gain authorized access into the system via login mechanism. This issue affects: Hitachi Energy TXpert Hub CoreTec 4 version 2.0.0 2.1.0; 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

Authentication bypass vulnerability in TXpert Hub CoreTec 4 where token validation of session identifiers can be bypassed, allowing attackers to modify messages to change existing user passwords and gain unauthorized system access.

MitigationApply vendor-provided security patches for TXpert Hub CoreTec 4 versions 2.0.0 through 2.2.1; implement additional validation and monitoring for password change requests until patch is deployed.

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 the TXpert Hub CoreTec 4 firmware version
    Access the system administration interface or use the vendor-provided CLI/management tool to retrieve the installed firmware version. Look for a version information page in the web UI or run the appropriate diagnostic command.
    Affected if The installed version is one of: 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
  2. Verify if the web-based management interface is exposed
    Check network configuration to determine if the TXpert Hub CoreTec 4 web interface is accessible from network segments outside the trusted internal network. Review firewall rules and access control lists.
    Affected if The web interface is accessible from untrusted networks or the internet without additional authentication layers beyond the application login.
  3. Inspect authentication session token handling
    Review session management configuration or logs to confirm whether session identifiers are being properly validated on password change requests. Check if requests without valid session tokens are being accepted.
    Affected if Password modification requests can be processed without a valid, authenticated session token, or if session validation can be bypassed.
  4. Audit password change and user management logs
    Review authentication and user management audit logs for any password change operations that occurred without corresponding successful login events or with invalid session identifiers.
    Affected if Password changes are logged that do not correspond to valid authenticated sessions or show anomalous patterns.

You are affected if TXpert Hub CoreTec 4 firmware version is 2.0.0 through 2.2.1 and the password change or user management functionality is accessible without proper session token validation.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor-provided security patches for TXpert Hub CoreTec 4 versions 2.0.0 through 2.2.1; implement additional validation and monitoring for password change requests until patch is deployed.

Fix this in Txpert Hub Coretec 4 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation8.0 h
  • Testing8.0 h
  • Review / QA4.0 h
26.0 hours of engineering $4,560
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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-2021-35530 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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