CVE-2026-24015 is a critical insecure default configuration flaw (CVSS 9.8) in Apache IoTDB. It affects 1.0.0 before 1.3.7 and 2.0.0 before 2.0.7. The Apache advisory rates it important and recommends upgrading to 1.3.7 or 2.0.7. Upgrade, and keep IoTDB off untrusted networks.
What's affected
Apache IoTDB 1.0.0 up to but not including 1.3.7, and 2.0.0 up to but not including 2.0.7. Apache recommends 1.3.7 for the first line and 2.0.7 for the second.
The advisory text is short. It does not describe which setting is insecure, so do not assume details. Read the Apache announcement and the release notes for the fixed versions.
How to check if you're exposed
Find the version of each IoTDB node from your installation: the name of the distribution you deployed, the container image tag, or the version reported by the server and client tools. Then check where IoTDB is reachable from. Time series databases often sit in industrial or IoT networks that are wider than people expect.
What to do now
- Upgrade to IoTDB 1.3.7 or 2.0.7 or later in your line.
- Limit network access to IoTDB's ports to the applications that need it, using firewall rules or security groups.
- Review the configuration files after the upgrade against the release notes, and change any default credentials.
- Do not expose IoTDB directly to the internet.
Why it matters
The record classifies this as CWE-1327, binding to an unrestricted IP address. That points at a service listening more widely than it should by default. The Apache message calls it an insecure default configuration vulnerability.
Defaults matter because many deployments never change them. The network-reachable, no privileges, no interaction rating in the vector explains the score of 9.8. The record does not list this CVE as known exploited.
Reading the severity score
The record gives a CVSS base score of 9.8, published 2026-03-09. In the vector, the attacker works over the network, needs no account, and the attack is low in complexity. User interaction is not needed. Impact on confidentiality is high, on integrity high and on availability high.
A base score describes the flaw in general, not your risk. Weigh it against how exposed your instance is and what it can reach. The Gold page for the CVE keeps the score, weakness and references together.
Hardening beyond the patch
Databases that collect data from devices are often deployed once and left alone. After upgrading, review the configuration files line by line against the release notes, change default accounts and passwords, and make sure the service listens only on the interfaces it needs. Place IoTDB in a segment that only data producers and consumers can reach, and log client connections so that unexpected addresses stand out.
Quick check
Do the Apache notes say what the insecure setting is?
Not in the text I read. Treat the upgrade as the fix, and check the release notes for the changed defaults.
Sources
Last reviewed: 19 October 2026.
