CVE-2026-62349: Taosdata Tdengine

High severity, CVSS 8.3. EPSS: 0.6% chance of exploitation in the next 30 days.

TDengine is an open source, time-series database optimized for Internet of Things devices. In 3.4.1.6 and earlier, source/libs/parser/src/parUtil.c trimString() checks space for only one byte before processing SQL string escape sequences \%, \_, or \x, allowing a one-byte out-of-bounds write to the stack buffer tmpTokenBuf that can cause denial of service and potentially remote code execution. This issue is fixed in version 3.4.1.14.

Affected products

• Taosdata Tdengine: before 3.4.1.14 (fixed in 3.4.1.14)

Published 2026-07-15. Last modified 2026-07-15.