CVE-2026-62353: TDengine: Authenticated Out-of-Bounds Read in SQL Lexer tGetToken

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-15 · updated 2026-10-24
Weakness: CWE-125

Description

TDengine is a time-series database optimized for Internet of Things devices. Prior to 3.4.1.14, source/libs/parser/src/parTokenizer.c tGetToken() incremented past a trailing backslash in a SQL string literal such as 'abc\ and read one byte beyond the null terminator, allowing an authenticated user who can submit SQL queries to crash the server and possibly leak adjacent memory. This issue is fixed in version 3.4.1.14.

Affected products

taosdata TDengine: before 3.4.1.14

References

https://github.com/taosdata/TDengine/security/advisories/GHSA-5r9p-3j4f-gmgp
https://github.com/taosdata/TDengine/security/advisories/GHSA-5r9p-3j4f-gmgp

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