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Vulnerability record · CVE-2026-62349 · published 15 July 2026

CVE-2026-62349: Stack-based buffer overflow vulnerability

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.

8.3 CVSS 3.1 High EPSS 0.57% · top 55.1% CWE-121 · Stack-based buffer overflowCWE-787 · Out-of-bounds write Deferred
8.3CVSS 3.1 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
15 Jul 2026Last modified by NVD

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.

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

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-62349), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.