CVE-2026-62349

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 v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

24 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) TDengine es una base de datos de series temporales de código abierto optimizada para dispositivos de internet de las cosas. En 3.4.1.6 y anteriores, source/libs/parser/src/parUtil.c trimString() verifica espacio para solo un byte antes de procesar las secuencias de escape de cadena SQL \%, \_, o \x, permitiendo una escritura fuera de límites de un byte en el búfer de pila tmpTokenBuf que puede causar denegación de servicio y potencialmente ejecución remota de código. Este problema está solucionado en la versión 3.4.1.14.

Information

Published : 2026-07-15 19:18

Updated : 2026-10-24 21:10

NVD link : CVE-2026-62349

Mitre link : CVE-2026-62349

CVE.ORG link : CVE-2026-62349

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

CWE-787

Out-of-bounds Write

{"id": "CVE-2026-62349", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62349", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-15T19:30:40.997887Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "taosdata", "product": "TDengine", "versions": [{"status": "affected", "version": "< 3.4.1.14"}]}]}], "published": "2026-07-15T19:18:37.347", "references": [{"url": "https://github.com/taosdata/TDengine/security/advisories/GHSA-4v5h-fxjw-vrmq", "source": "security-advisories@github.com"}, {"url": "https://github.com/taosdata/TDengine/security/advisories/GHSA-4v5h-fxjw-vrmq", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-121"}, {"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "TDengine es una base de datos de series temporales de c\u00f3digo abierto optimizada para dispositivos de internet de las cosas. En 3.4.1.6 y anteriores, source/libs/parser/src/parUtil.c trimString() verifica espacio para solo un byte antes de procesar las secuencias de escape de cadena SQL \\%, \\_, o \\x, permitiendo una escritura fuera de l\u00edmites de un byte en el b\u00fafer de pila tmpTokenBuf que puede causar denegaci\u00f3n de servicio y potencialmente ejecuci\u00f3n remota de c\u00f3digo. Este problema est\u00e1 solucionado en la versi\u00f3n 3.4.1.14."}], "lastModified": "2026-10-24T21:10:00.130", "sourceIdentifier": "security-advisories@github.com"}