CVE-2026-62348: TDengine Enterprise missing authorization in KILL SSMIGRATE

CVE-2026-62348 · Severity: medium · CVSS 5.4 · Published 2026-07-15

TDengine Enterprise, a database optimized for Internet of Things (IoT) data, contains a flaw that allows users with low-level access to disrupt critical data operations. Specifically, an unauthorized user can prematurely terminate 'shared-storage migration' tasks, which are responsible for moving database records to long-term storage. This can lead to operational delays and interfere with how the database manages its storage resources.

Vendors: TAOS Data.

Quick answers

Is CVE-2026-62348 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-62348 being exploited in the wild.
How severe is CVE-2026-62348?
Medium severity, with a CVSS score of 5.4, published 15 July 2026.
Which products and versions are affected?
TAOS Data TDengine Enterprise < 3.4.1.15.
Is there a fix for CVE-2026-62348?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-62348 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-62348?
Check whether you run TAOS Data TDengine Enterprise at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A missing authorization vulnerability (CWE-862) exists in TDengine Enterprise prior to version 3.4.1.15. The root cause is located in the mnode handler function `mndProcessKillSsMigrateReq`, where the intended `MND_OPER_SSMIGRATE_DB` privilege check was commented out in the source code. This allows an authenticated user with low privileges to execute the `KILL SSMIGRATE <id>` command against active shared-storage migrations, even if they lack the necessary administrative rights. An attacker who can identify a migration ID can successfully terminate and drop migration tasks, impacting data movement and availability. The issue is resolved in version 3.4.1.15 by restoring the privilege check.

Affected products

  • taosdata TDengine Enterprise < 3.4.1.15

Timeline

  • 2026-06-26: advisory: Vendor advisory published on GitHub
  • 2026-07-15: disclosed: CVE published to NVD

References

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