CVE-2026-40006Network attack vector

Unauthenticated heap exhaustion via unbounded AirGap allocation

Published Jul 10, 2026 · Updated Jul 10, 2026

Resource exhaustion in Apache IoTDB 1.0.0 through 2.0.9 allows remote attackers to crash a DataNode through the AirGap receiver. The AirGap readLength method accepts a socket-controlled 32-bit length, and readData passes it to a byte-array allocation without an upper bound. Exposure requires the nondefault pipe_air_gap_receiver_enabled setting; one connection can request nearly 2 GiB and exhaust JVM heap.

CVSS severity7.5
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Apache IoTDB 1.0.0 through 2.0.9 allows remote attackers to crash a DataNode through the AirGap receiver. The AirGap readLength method accepts a socket-controlled 32-bit length, and readData passes it to a byte-array allocation without an upper bound. Exposure requires the nondefault pipe_air_gap_receiver_enabled setting; one connection can request nearly 2 GiB and exhaust JVM heap.

The record

CVE
CVE-2026-40006
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
The Apache Software Foundation
Product
Apache IoTDB
Classifications
CWE-789, CWE-770, CWE-306, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <2.0.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache IoTDBversion=1.0.0 <2.0.10

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-789Memory Allocation with Excessive Size Value
CWE-770Allocation of Resources Without Limits or Throttling
CWE-306Missing Authentication for Critical Function
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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