What is CVE-2026-40009?

CVE-2026-40009 is a medium-severity vulnerability in Apache Software Foundation Iotdb, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2026-07-10.

How severe is CVE-2026-40009?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Privilege escalation in Apache Software Foundation Iotdb

CVE-2026-40009

Improper Privilege Management, Improper Access Control vulnerability in Apache IoTDB. Authenticated users can escalate to full tree-path access by renaming themselves to __internal_auditor. This issue affects Apache IoTDB: from 2.0.8 before 2.0.10. Users are recommended to upgrade to version 2.0.10, which fixes the issue.

Vulnerability class: Privilege Escalation

EPSS: 0.003 (18.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apache Software Foundation Iotdb — versions 2.0.8

Weakness classification (CWE)

References

security@apache.org (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-40009?: CVE-2026-40009 is a medium-severity vulnerability in Apache Software Foundation Iotdb, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2026-07-10.
How severe is CVE-2026-40009?: Medium severity. CVSS v3 base score is 6.5 out of 10.