🛡️ CVE-2026-40006

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-306 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2026-40006 is classified as CWE-306: Missing Authentication for Critical Function. A sensitive function can be reached without authenticating at all.

Affected software

CVE-2026-40006 is recorded against 1 package.

  • unknown

Timeline and source

Published on 10 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

lists.apache.org
www.openwall.com

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-306
Public Exploit ✅ No
Source NVD
Published 2026-07-10
Updated 2026-08-11
Modified 2026-07-10
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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