RCE in OpenStack Ironic Python Agent

CVE-2026-66138

In OpenStack Ironic Python Agent through 11.6.0, a project-scoped user with the manager role can achieve arbitrary code execution on a running Ironic-Python-Agent via a maliciously constructed configuration, because the value of ntp_server is passed to a shell.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-66138: held from 0.008 to 0.005.

EPSS over last 30 days · oldest: 0.008 · newest: 0.005 · change: -0.003

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-66138?
CVE-2026-66138 is a high-severity vulnerability in OpenStack Ironic Python Agent, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-07-24.
How severe is CVE-2026-66138?
High severity. CVSS v3 base score is 7.2 out of 10.