CVE-2026-40006: CWE-789 Memory Allocation with Excessive Size Value in Apache Software Foundation Apache IoTDB
CVE-2026-40006 is a vulnerability in Apache IoTDB versions from 1.0.0 up to but not including 2.0.10. When the configuration pipe_air_gap_receiver_enabled is true, the IoTDB AirGap pipe receiver accepts unauthenticated raw TCP connections on port 9780. An attacker can send a crafted 32-bit integer to request a large memory allocation without any upper bound checks, potentially causing the JVM to allocate up to approximately 2GB of memory per connection. This can exhaust heap memory and crash or severely degrade the DataNode process. The issue is fixed in version 2.0.10.
AI Analysis
Technical Summary
Apache IoTDB versions >=1.0.0 <2.0.10 have a vulnerability where the AirGap pipe receiver, when enabled, listens on TCP port 9780 without authentication. The readLength method reads an attacker-controlled 32-bit integer from the socket and passes it directly to allocate a byte array with no upper bound validation. This allows an unauthenticated attacker to cause excessive memory allocation (up to 2,147,483,647 bytes) per connection, leading to heap exhaustion and potential denial of service by crashing or degrading the DataNode process. The vulnerability combines CWE-789 (Memory Allocation with Excessive Size Value), CWE-770 (Allocation of Resources Without Limits or Throttling), and CWE-306 (Missing Authentication for Critical Function). The issue is resolved in Apache IoTDB version 2.0.10.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to cause excessive memory allocation on the affected Apache IoTDB DataNode, leading to heap memory exhaustion. This can crash the JVM or severely degrade the DataNode's availability and performance, resulting in denial of service conditions.
Mitigation Recommendations
Users should upgrade Apache IoTDB to version 2.0.10 or later, where this vulnerability is fixed. No other mitigations or temporary fixes are documented. Since this is not a cloud service, remediation depends on user action to upgrade.
CVE-2026-40006: CWE-789 Memory Allocation with Excessive Size Value in Apache Software Foundation Apache IoTDB
Description
CVE-2026-40006 is a vulnerability in Apache IoTDB versions from 1.0.0 up to but not including 2.0.10. When the configuration pipe_air_gap_receiver_enabled is true, the IoTDB AirGap pipe receiver accepts unauthenticated raw TCP connections on port 9780. An attacker can send a crafted 32-bit integer to request a large memory allocation without any upper bound checks, potentially causing the JVM to allocate up to approximately 2GB of memory per connection. This can exhaust heap memory and crash or severely degrade the DataNode process. The issue is fixed in version 2.0.10.
Affected software
pkg:maven/org.apache.iotdb/iotdbRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Apache IoTDB versions >=1.0.0 <2.0.10 have a vulnerability where the AirGap pipe receiver, when enabled, listens on TCP port 9780 without authentication. The readLength method reads an attacker-controlled 32-bit integer from the socket and passes it directly to allocate a byte array with no upper bound validation. This allows an unauthenticated attacker to cause excessive memory allocation (up to 2,147,483,647 bytes) per connection, leading to heap exhaustion and potential denial of service by crashing or degrading the DataNode process. The vulnerability combines CWE-789 (Memory Allocation with Excessive Size Value), CWE-770 (Allocation of Resources Without Limits or Throttling), and CWE-306 (Missing Authentication for Critical Function). The issue is resolved in Apache IoTDB version 2.0.10.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to cause excessive memory allocation on the affected Apache IoTDB DataNode, leading to heap memory exhaustion. This can crash the JVM or severely degrade the DataNode's availability and performance, resulting in denial of service conditions.
Mitigation Recommendations
Users should upgrade Apache IoTDB to version 2.0.10 or later, where this vulnerability is fixed. No other mitigations or temporary fixes are documented. Since this is not a cloud service, remediation depends on user action to upgrade.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-04-08T08:41:59.817Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a50a3b368715ace433bd384
Added to database: 07/10/2026, 07:48:03 UTC
Last enriched: 07/10/2026, 07:54:32 UTC
Last updated: 07/10/2026, 08:07:31 UTC
Views: 3
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