CVE-2026-62349 HIGH

CVE-2026-62349: TDengine: Off-by-One Buffer Overflow

Vendor Taosdata
Product TDengine
Weakness CWE-121
Published July 15, 2026
Last update July 15, 2026

CVSS base score

8.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 15, 2026 CVE published
July 15, 2026 Record updated