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TI-2026-44503 Aliases CVE-2026-62349

TDengine: Off-by-One Buffer Overflow

Priority HIGH 69CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00498 42nd percentileScored 2026-11-07
Fix Fixed TDengine (taosdata): 3.4.1.14

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
taosdataTDenginebefore 3.4.1.143.4.1.14Patch availableCNA
  • TDengine Vendortaosdata Affected before 3.4.1.14 Fixed in 3.4.1.14 Patch available CNA

Remediation

  • Fix · CNA TDengine (taosdata) Fixed in 3.4.1.14

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-62349

References

Other 1

  • TI-2023-16957 Command Injection Vulnerability in `Release PR Merged` Workflow in taosdata/grafanaplugin CVSS 3.1CRITICAL 9.8
  • TI-2026-44505 TDengine: Unauthenticated Remote Denial of Service via Out-of-Bounds Read in transDecompressMsg CVSS 3.1HIGH 7.5
  • TI-2026-44504 TDengine: UDF lead to RCE CVSS 3.1HIGH 7.2
  • TI-2023-19882 TDengine Database Denial-of-Service CVSS 3.1MEDIUM 6.5
  • TI-2026-44506 TDengine: Authenticated Out-of-Bounds Read in SQL Lexer tGetToken CVSS 3.1MEDIUM 5.4
  • TI-2026-44502 TDengine: KILL SSMIGRATE missing authorization lets low-privilege users interrupt shared-storage migrations CVSS 3.1MEDIUM 5.4
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences