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CVE-2026-40454 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://www.openwall.com/lists/oss-security/2026/07/10/8	CVE
https://lists.apache.org/thread/9wml325g6bpovw0jf5ymtc3xl7fwlkrn	[email protected]	AdvisoryMailing ListRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
Apache IoTDB C++ client	>= 1.3.5, < 1.3.8 (semver) >= 2.0.5, < 2.0.10 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 2.0.10moderate effort

Change History

3 change records found show changes

Date	Action	Recorded By
Jul 10, 2026	CVE Modified	CVE
Jul 10, 2026	CVE Modified	CISA-ADP
Jul 10, 2026	New CVE Received	[email protected]