What is CVE-2026-40454?

CVE-2026-40454 is a high-severity vulnerability in Apache Software Foundation Iotdb C++ Client, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-07-10.

How severe is CVE-2026-40454?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Apache Software Foundation Iotdb C++ Client

CVE-2026-40454

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++ clien…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apache Software Foundation Iotdb C++ Client — versions 1.3.5, 2.0.5

Weakness classification (CWE)

References

security@apache.org (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-40454?: CVE-2026-40454 is a high-severity vulnerability in Apache Software Foundation Iotdb C++ Client, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-07-10.
How severe is CVE-2026-40454?: High severity. CVSS v3 base score is 7.5 out of 10.