PatchSiren cyber security CVE debrief

CVE-2026-44630 Apache Software Foundation CVE debrief

Apache IoTDB RPC service vulnerability allows remote unauthenticated attackers to cause denial of service via crafted Thrift frame. Affected versions: Apache IoTDB before 1.3.8, 2.0.0 to 2.0.9. Upgrade to 2.0.10 to fix. The vulnerability is caused by improper validation of length fields in the Apache IoTDB RPC service, which can lead to excessive memory allocation and a crash with an OutOfMemoryError. Security teams and administrators should review system inventory, implement monitoring for excessive memory allocation, and prioritize remediation efforts accordingly. Limited detail is available on exploitability and affected systems, so further research may be needed to confirm affected scope and severity.

Vendor: Apache Software Foundation
Product: Apache IoTDB
CVSS: Unknown
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-08-10
Original CVE updated: 2026-08-10
Advisory published: 2026-08-10
Advisory updated: 2026-08-10

Who should care

Security teams and administrators responsible for Apache IoTDB installations should review and apply the recommended upgrade to prevent potential denial of service attacks. They should also verify IoTDB deployments, review system inventory, and monitor for excessive memory allocation. Additionally, operators and platform administrators may need to assess the impact on their systems and prioritize remediation efforts accordingly.

Technical summary

CVE-2026-44630 is a denial of service vulnerability in Apache IoTDB's RPC service. A remote unauthenticated attacker can send a crafted malformed Thrift frame to cause IoTDB to allocate excessive memory, leading to an OutOfMemoryError and crash. The issue affects Apache IoTDB versions before 1.3.8 and 2.0.0 to 2.0.9. Users are recommended to upgrade to version 2.0.10. Security teams should review system inventory and implement monitoring for excessive memory allocation to mitigate potential attacks.

Defensive priority

Medium

Recommended defensive actions

Upgrade to Apache IoTDB 2.0.10
Review system inventory for Apache IoTDB versions before 1.3.8 and 2.0.0 to 2.0.9
Implement monitoring for excessive memory allocation
Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

Official CVE and NVD records confirm vulnerability in Apache IoTDB. Limited detail available on exploitability and affected systems. Security teams should verify IoTDB deployments, review system inventory, and monitor for excessive memory allocation. Evidence is based on CVE and NVD records; further research may be needed to confirm affected scope and severity.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-10T10:17:32.483Z and has not been modified since then.