CVE-2026-44630Network attack vector

Unauthenticated RPC crash via unchecked Thrift length

Published Aug 10, 2026 · Updated Aug 10, 2026

Resource exhaustion in Apache IoTDB before 1.3.8 and 2.0.0 through 2.0.9 allows remote attackers to crash the RPC service. The RPC service trusts a string length declared in a malformed Thrift frame and allocates that attacker-controlled size without an adequate bound, exhausting heap memory and raising an OutOfMemoryError. No authentication or user interaction is required; the documented consequence is an availability-only service crash, with no reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.41%
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 before 1.3.8 and 2.0.0 through 2.0.9 allows remote attackers to crash the RPC service. The RPC service trusts a string length declared in a malformed Thrift frame and allocates that attacker-controlled size without an adequate bound, exhausting heap memory and raising an OutOfMemoryError. No authentication or user interaction is required; the documented consequence is an availability-only service crash, with no reported data disclosure or modification.

The record

CVE
CVE-2026-44630
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Apache Software Foundation
Product
Apache IoTDB
Classifications
CWE-789, CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 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=0 <1.3.8
  2. Affected versionversion=2.0.0 <2.0.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache IoTDBversion=0 <1.3.8; version=2.0.0 <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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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