CVE-2026-62350
Deferred Deferred - Pending Action

Arbitrary Code Execution in TDengine via Malicious UDF Upload

Publication date: 2026-07-15

Last updated on: 2026-07-18

Assigner: GitHub, Inc.

Description
TDengine is an open source, time-series database optimized for Internet of Things devices. Prior to 3.4.1.15, a user with create udf privilege could upload a crafted shared library and install it as a user-defined function, such as eval, then execute arbitrary C code on the TDengine server side through database queries. This issue is fixed in version 3.4.1.15.

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Meta Information

Published
2026-07-15
Last Modified
2026-07-18
Generated
2026-08-05
AI Q&A
2026-07-16
EPSS Evaluated
2026-08-03
NVD
CVE-2026-62350
EUVD
EUVD-2026-44766

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
taosdata tdengine to 3.0.5.0 (exc)
taosdata tdengine 3.4.1.15

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

This vulnerability in TDengine allows a user with create udf privilege to upload a malicious shared library and install it as a user-defined function. When executed through database queries, it can run arbitrary C code on the server side, leading to remote code execution.

Detection Guidance

Check TDengine server versions prior to 3.4.1.15 for installed UDFs named eval or similar. Inspect logs for unusual UDF installations or queries. Use commands like 'taos -s "show functions;"' to list UDFs and verify their integrity.

Impact Analysis

An attacker could gain full control of the TDengine server, leading to unauthorized data access, modification, or deletion. They could also execute system commands, install malware, or pivot to other systems in the network.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Upgrade TDengine to version 3.4.1.15 or later immediately. Remove unnecessary UDF privileges for users. Audit existing UDFs and delete any suspicious ones. Monitor for unauthorized UDF installations or executions.

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