Description
A Broken Access Control vulnerability exists in ThingsBoard Professional Edition (PE) 4.21 and below, within the Alarms comments functionality. An authenticated customer user can manipulate the respective API request parameters to create or modify system-generated alarm comments. This allows unauthorized impersonation of system messages and modification of trusted system-owned data, resulting in vertical privilege escalation and potential integrity violations.
Published: 2026-08-26
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 02 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 02 Sep 2026 07:30:00 +0000

Type Values Removed Values Added
Title Broken Access Control in ThingsBoard Alarm Comments Enables Privilege Escalation

Wed, 02 Sep 2026 00:45:00 +0000

Type Values Removed Values Added
Title Broken Access Control in ThingsBoard Alarm Comments Enables Privilege Escalation
Weaknesses CWE-285

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}


Thu, 27 Aug 2026 00:45:00 +0000

Type Values Removed Values Added
First Time appeared Thingsboard
Thingsboard thingsboard
Vendors & Products Thingsboard
Thingsboard thingsboard

Wed, 26 Aug 2026 21:45:00 +0000

Type Values Removed Values Added
Title Broken Access Control in ThingsBoard Alarm Comments Enables Privilege Escalation
Weaknesses CWE-284
CWE-285

Wed, 26 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Description A Broken Access Control vulnerability exists in ThingsBoard Professional Edition (PE) 4.21 and below, within the Alarms comments functionality. An authenticated customer user can manipulate the respective API request parameters to create or modify system-generated alarm comments. This allows unauthorized impersonation of system messages and modification of trusted system-owned data, resulting in vertical privilege escalation and potential integrity violations.
References

Subscriptions

Thingsboard Thingsboard
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-01T18:41:27.063Z

Reserved: 2026-01-09T00:00:00.000Z

Link: CVE-2025-70340

cve-icon Vulnrichment

Updated: 2026-09-01T18:41:14.166Z

cve-icon NVD

Status : Received

Published: 2026-08-26T20:16:59.823

Modified: 2026-09-01T19:17:19.670

Link: CVE-2025-70340

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T07:15:04Z

Weaknesses