CVE-2026-62349

Summary

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.

Affected Software

Weaknesses

• CWE-121: CWE-121: Stack-based Buffer Overflow
• CWE-787: CWE-787: Out-of-bounds Write

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

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

References

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

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