Authenticated server crash via trailing-backslash lexer read
Published Jul 15, 2026 · Updated Jul 15, 2026
Out-of-bounds read in TDengine before 3.4.1.14 allows remote authenticated users to crash the server or expose adjacent memory. In tGetToken, escape handling increments past a trailing backslash and then reads one byte beyond the SQL string's null terminator. Exploitation requires credentials and permission to submit SQL; the demonstrated consequence is a server-process crash, with only a small adjacent-memory disclosure reported.
Summary
What happened
Out-of-bounds read in TDengine before 3.4.1.14 allows remote authenticated users to crash the server or expose adjacent memory. In tGetToken, escape handling increments past a trailing backslash and then reads one byte beyond the SQL string's null terminator. Exploitation requires credentials and permission to submit SQL; the demonstrated consequence is a server-process crash, with only a small adjacent-memory disclosure reported.
The record
- CVE
- CVE-2026-62353
- Published
- Jul 15, 2026
- Updated
- Jul 15, 2026
- Vendor
- TAOS Data
- Product
- TDengine
- Classifications
- CWE-125, CWE-126, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 15, 2026CVE publishedPublication date reported by the CVE source.
- Jul 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 3.4.1.14
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-5r9p-3j4f-gmgp direct lexer proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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