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Vulnerability record · CVE-2026-40454 · published 10 July 2026

CVE-2026-40454: Improper input validation vulnerability

Out-of-bounds Read, Improper Input Validation vulnerability in Apache IoTDB C++ client. Out-of-bounds reads in IoTDB C++ client TsBlock deserializer crash client process on malformed server data. This issue affects Apache IoTDB C++ client: from 1.3.5 before 1.3.8, from 2.0.5 before 2.0.10. Users are recommended to upgrade to version 2.0.10, which fixes the issue.

7.5 CVSS 3.1 High EPSS 0.49% · top 60.5% CWE-20 · Improper input validationCWE-125 · Out-of-bounds read Deferred
7.5CVSS 3.1 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
10 Jul 2026Last modified by NVD

Description

Out-of-bounds Read, Improper Input Validation vulnerability in Apache IoTDB C++ client. Out-of-bounds reads in IoTDB C++ client TsBlock deserializer crash client process on malformed server data. This issue affects Apache IoTDB C++ client: from 1.3.5 before 1.3.8, from 2.0.5 before 2.0.10. Users are recommended to upgrade to version 2.0.10, which fixes the issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

LinkTags
https://lists.apache.org/thread/9wml325g6bpovw0jf5ymtc3xl7fwlkrn
http://www.openwall.com/lists/oss-security/2026/07/10/8

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Source: NIST National Vulnerability Database (record CVE-2026-40454), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.