CVE-2026-62353: CWE-125: Out-of-bounds Read in taosdata TDengine
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.
AI Analysis
Technical Summary
TDengine versions prior to 3.4.1.14 contain an out-of-bounds read vulnerability (CWE-125) in the source/libs/parser/src/parTokenizer.c function tGetToken(). When processing SQL string literals with a trailing backslash (e.g., 'abc\'), the function increments past the backslash and reads one byte beyond the null terminator. This can lead to server crashes and possible adjacent memory disclosure. The vulnerability requires an authenticated user able to submit SQL queries. The issue is resolved in TDengine version 3.4.1.14.
Potential Impact
An authenticated user with permission to submit SQL queries can exploit this vulnerability to cause a denial of service by crashing the TDengine server. Additionally, there is a possibility of leaking adjacent memory, which may expose sensitive information. The impact is limited to confidentiality and availability, with no integrity impact reported.
Mitigation Recommendations
Upgrade TDengine to version 3.4.1.14 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory indicating the fix in 3.4.1.14. No other mitigation or temporary workaround is documented.
CVE-2026-62353: CWE-125: Out-of-bounds Read in taosdata TDengine
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.
CVSS v3.1
Score 5.4medium
Affected software
pkg:github/taosdata/TDengineRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
TDengine versions prior to 3.4.1.14 contain an out-of-bounds read vulnerability (CWE-125) in the source/libs/parser/src/parTokenizer.c function tGetToken(). When processing SQL string literals with a trailing backslash (e.g., 'abc\'), the function increments past the backslash and reads one byte beyond the null terminator. This can lead to server crashes and possible adjacent memory disclosure. The vulnerability requires an authenticated user able to submit SQL queries. The issue is resolved in TDengine version 3.4.1.14.
Potential Impact
An authenticated user with permission to submit SQL queries can exploit this vulnerability to cause a denial of service by crashing the TDengine server. Additionally, there is a possibility of leaking adjacent memory, which may expose sensitive information. The impact is limited to confidentiality and availability, with no integrity impact reported.
Mitigation Recommendations
Upgrade TDengine to version 3.4.1.14 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory indicating the fix in 3.4.1.14. No other mitigation or temporary workaround is documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-13T21:42:50.096Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a57dcf368715ace434afb71
Added to database: 07/15/2026, 19:18:11 UTC
Last enriched: 07/15/2026, 19:33:29 UTC
Last updated: 07/15/2026, 20:08:25 UTC
Views: 5
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