Apache IoTDB up to 2.0.9 AirGap Pipe Receiver readLength/readData length missing authentication

Summaryinfo

A vulnerability classified as problematic was found in Apache IoTDB up to 2.0.9. Impacted is the function readLength/readData of the component AirGap Pipe Receiver. Such manipulation of the argument length leads to missing authentication. This vulnerability is documented as CVE-2026-40006. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apache IoTDB up to 2.0.9. Affected by this issue is the function readLength/readData of the component AirGap Pipe Receiver. The manipulation of the argument length with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is availability. CVE summarizes:

Memory Allocation with Excessive Size Value, Allocation of Resources Without Limits or Throttling, Missing Authentication for Critical Function vulnerability in Apache IoTDB. When pipe_air_gap_receiver_enabled=true, the IoTDB AirGap pipe receiver accepts raw TCP connections on port 9780 with no authentication. The readLength method reads an attacker-controlled 32-bit integer from the socket and readData passes it directly to new byte[length] with no upper-bound check. An unauthenticated attacker can cause the JVM to attempt an allocation of up to 2,147,483,647 bytes per connection, exhausting heap memory and crashing or severely degrading the DataNode process. This issue affects Apache IoTDB: from 1.0.0 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 is handled as CVE-2026-40006 since 04/08/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. 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 2.0.10 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• IoTDB

Version

• 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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