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OpenAdvisories
High · 7.5 CVE-2026-42542 EUVD-2026-36136

TDengine has an integer underflow in uvConnMayGetUserInfo() allows unauthenticated remote crash (DoS)

Published Jun 10, 2026 · Updated Jun 11, 2026 · Assigned by GitHub_M

Description

TDengine is an open source, time-series database optimized for Internet of Things devices. In versions 3.4.0.0 through 3.4.1.5, an unauthenticated remote attacker can crash the taosd server process by sending a single crafted RPC packet. No credentials or prior session state are required. Version 3.4.1.6 fixes the issue.

Affected products

VendorProductAffectedFixed
taosdata TDengine >= 3.4.0.0, < 3.4.1.6 —

References