CVE-2026-62349 | TDengine is an open source, time-series database optimized f… | CVSS 8.3 HIGH

Description

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.

Metadata

CVE ID: CVE-2026-62349
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-13 21:42 UTC
Published: 2026-07-15 18:55 UTC
Last updated: 2026-07-15 19:37 UTC
Primary CWE: CWE-121
CWE-121: Stack-based Buffer Overflow
Vendor / Product: taosdata / TDengine
Sources: cve.org · NVD

Severity & Metrics

8.3 HIGH CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
taosdata	TDengine	—	< 3.4.1.14

Weakness (CWE)

CWE	Source	Description
CWE-121	cna	CWE-121: Stack-based Buffer Overflow
CWE-787	cna	CWE-787: Out-of-bounds Write

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.3	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

References (1)

https://github.com/taosdata/TDengine/security/advisories/GHSA-4v5h-fxjw-vrmq https://github.com/taosdata/TDengine/security/advisories/GHSA-4v5h-fxjw-vrmq