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CVE-2026-62349

TDengine: Off-by-One Buffer Overflow

Published: Jul 15, 2026Updated: Jul 15, 2026 Sources: CVE List NVDCWE-121
8.3HIGH
NVD MITRE
EPSS Score
0.4%
Top 67.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:LA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:HAvailability
High
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Weaknesses

CWE-121CWE-787

Affected Products

taosdata
oss-project·CN
TDengineOn-prem
Databases / nosql

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

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

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