CVE-2026-44630
Received Received - Intake

Denial of Service in Apache IoTDB due to improper length validation

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: Apache Software Foundation

Description
Improper validation of length fields in the Apache IoTDB RPC service may allow a remote unauthenticated attacker to cause a denial of service. By sending a crafted malformed Thrift frame, an attacker can cause IoTDB to allocate an excessive amount of memory and crash with an OutOfMemoryError. This issue affects Apache IoTDB: before 1.3.8, from 2.0.0 before 2.0.9. Users are recommended to upgrade to version 2.0.10, which fixes the issue.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-44630
EUVD
EUVD-2026-55157

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
apache iotdb to 1.3.8 (exc)
apache iotdb From 2.0.0 (inc) to 2.0.9 (exc)
apache iotdb 2.0.10

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-789 The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

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Executive Summary

This vulnerability involves improper validation of length fields in the Apache IoTDB RPC service. A remote unauthenticated attacker can exploit it by sending a crafted malformed Thrift frame, causing IoTDB to allocate excessive memory and crash with an OutOfMemoryError, leading to a denial of service.

Detection Guidance

Detecting this vulnerability requires monitoring for malformed Thrift frames or unusual memory allocation patterns in Apache IoTDB. Check IoTDB logs for OutOfMemoryError messages or crashes. Use network monitoring tools like Wireshark to inspect RPC traffic for malformed frames targeting IoTDB ports.

Impact Analysis

The vulnerability can cause Apache IoTDB to crash, disrupting services that rely on it. This may lead to downtime, data unavailability, or service interruptions for applications using affected versions of IoTDB.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it is a denial-of-service issue rather than a data breach or privacy violation. However, a denial-of-service condition could impact availability requirements under these regulations if critical systems depend on Apache IoTDB services.

Mitigation Strategies

Immediately upgrade Apache IoTDB to version 2.0.10 or later. If upgrading is not possible, restrict network access to IoTDB RPC ports using firewalls or disable the RPC service if not required. Monitor system resources for abnormal memory usage.

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