CVE-2026-62355: CWE-269: Improper Privilege Management in taosdata TDengine
TDengine is an open source, time-series database optimized for Internet of Things devices. Prior to 3.4.1.15, a Data Reader admin_user on a TDengine Cloud DB instance could run create udf even though standard users should have read-only permissions for non-database objects and show dnodes and create user were denied. This issue is fixed in version 3.4.1.15.
AI Analysis
Technical Summary
This vulnerability involves improper privilege management (CWE-269) in TDengine versions before 3.4.1.15. Specifically, a Data Reader with admin_user privileges could perform unauthorized operations like create udf, which should be restricted to higher privilege roles. The flaw violates intended permission boundaries by allowing escalation of capabilities beyond read-only access for non-database objects. The vendor fixed this issue in version 3.4.1.15.
Potential Impact
An attacker with Data Reader admin_user privileges could execute unauthorized commands such as create udf, potentially leading to unauthorized modification or extension of database functionality. The confidentiality and integrity of the database could be partially impacted due to this improper privilege enforcement. Availability impact is not indicated. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade TDengine to version 3.4.1.15 or later, where this privilege management issue is fixed. Since no official remediation level or patch link is provided beyond this version indication, users should verify the upgrade from the vendor's official releases. No other mitigation steps are specified or required.
CVE-2026-62355: CWE-269: Improper Privilege Management in taosdata TDengine
Description
TDengine is an open source, time-series database optimized for Internet of Things devices. Prior to 3.4.1.15, a Data Reader admin_user on a TDengine Cloud DB instance could run create udf even though standard users should have read-only permissions for non-database objects and show dnodes and create user were denied. This issue is fixed in version 3.4.1.15.
CVSS v3.1
Score 5.4medium
Affected software
pkg:github/taosdata/TDengineRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper privilege management (CWE-269) in TDengine versions before 3.4.1.15. Specifically, a Data Reader with admin_user privileges could perform unauthorized operations like create udf, which should be restricted to higher privilege roles. The flaw violates intended permission boundaries by allowing escalation of capabilities beyond read-only access for non-database objects. The vendor fixed this issue in version 3.4.1.15.
Potential Impact
An attacker with Data Reader admin_user privileges could execute unauthorized commands such as create udf, potentially leading to unauthorized modification or extension of database functionality. The confidentiality and integrity of the database could be partially impacted due to this improper privilege enforcement. Availability impact is not indicated. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade TDengine to version 3.4.1.15 or later, where this privilege management issue is fixed. Since no official remediation level or patch link is provided beyond this version indication, users should verify the upgrade from the vendor's official releases. No other mitigation steps are specified or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-13T22:04:59.676Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a57dcf368715ace434afb74
Added to database: 07/15/2026, 19:18:11 UTC
Last enriched: 07/15/2026, 19:33:21 UTC
Last updated: 07/15/2026, 20:14:53 UTC
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.