CVE-2026-40454
Received Received - Intake

Out-of-bounds Read in Apache IoTDB C++ Client

Publication date: 2026-07-10

Last updated on: 2026-07-10

Assigner: Apache Software Foundation

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.

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Meta Information

Published
2026-07-10
Last Modified
2026-07-10
Generated
2026-07-10
AI Q&A
2026-07-10
EPSS Evaluated
N/A
NVD
CVE-2026-40454
EUVD
EUVD-2026-42839

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
apache iotdb From 1.3.5 (inc) to 1.3.8 (exc)
apache iotdb From 2.0.5 (inc) to 2.0.10 (exc)
apache iotdb 2.0.10

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

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Executive Summary

This vulnerability is an Out-of-bounds Read and Improper Input Validation issue in the Apache IoTDB C++ client. Specifically, the TsBlock deserializer in the client can read data outside the intended memory bounds when processing malformed server data, which can cause the client process to crash.

Impact Analysis

The vulnerability can cause the Apache IoTDB C++ client process to crash when it encounters malformed data from the server. This can lead to denial of service or disruption of client operations.

Mitigation Strategies

Users are recommended to upgrade the Apache IoTDB C++ client to version 2.0.10, which fixes the out-of-bounds read vulnerability.

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