Apache IoTDB C++ client up to 1.3.7/2.0.9 TsBlock Deserializer out-of-bounds

Summaryinfo

A vulnerability categorized as critical has been discovered in Apache IoTDB C++ client up to 1.3.7/2.0.9. This affects an unknown part of the component TsBlock Deserializer. Executing a manipulation can lead to out-of-bounds. The identification of this vulnerability is CVE-2026-40454. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Apache IoTDB C++ client up to 1.3.7/2.0.9. This vulnerability affects an unknown functionality of the component TsBlock Deserializer. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at lists.apache.org. This vulnerability was named CVE-2026-40454 since 04/13/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/10/2026).

Upgrading to version 1.3.8 or 2.0.10 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Apache

Name

• IoTDB C++ client

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.3.5
• 1.3.6
• 1.3.7
• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8
• 2.0.9

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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