CVE-2026-62353 Details
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.
A stack-based buffer overflow vulnerability has been identified in TDengine versions through 3.4.1.13. The issue arises in the SQL lexer function tGetToken(), located in the file parTokenizer.c. The vulnerability occurs when the input string contains a trailing backslash, causing the lexer to read one byte beyond the null terminator. This flaw can be exploited by an authenticated user who submits SQL queries, leading to a server crash and potentially leaking adjacent memory.
Users can upgrade to TDengine version 3.4.1.14 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 15, 2026CISA-ADP
Assessed Jul 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/taosdata/TDengine/security/advisories/GHSA-5r9p-3j4f-gmgp | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/taosdata/TDengine/security/advisories/GHSA-5r9p-3j4f-gmgp | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
| CWE-126 | Buffer Over-read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| TDengine | <= 3.4.1.13 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | CVE Modified | CISA-ADP |
| Jul 15, 2026 | New CVE Received | [email protected] |