CVE-2025-70340

Broken Access Control in ThingsBoard Alarm Comments Enables Privilege Escalation

Published Aug 26, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

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

Type Values Removed Values Added
First Time appeared Thingsboard
Thingsboard thingsboard
Vendors & Products Thingsboard
Thingsboard thingsboard
Type Values Removed Values Added
Title Broken Access Control in ThingsBoard Alarm Comments Enables Privilege Escalation
Weaknesses CWE-284
CWE-285
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 1, 2026, 6:41 PM
Reserved
Jan 9, 2026, 12:00 AM
Status
Deferred
Published
Aug 26, 2026, 8:16 PM
Modified
Oct 26, 2026, 9:10 PM