CVE-2026-66138Network attack vector

Root command execution via unsanitized NTP server configuration

Published Jul 24, 2026 · Updated Jul 24, 2026

OS command injection in affected OpenStack Ironic Python Agent releases allows remote authenticated users to execute commands as root. The startup time-syncing code inserts the ntp_server configuration value into a shell command without sanitization, and that command runs as root. The value can originate in an operator-built ramdisk, the Ironic kernel command line, or mDNS; a project Manager for node.owner can obtain node-level ramdisk shell access, with no known path to compromise the Ironic service.

CVSS severity7.2
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in affected OpenStack Ironic Python Agent releases allows remote authenticated users to execute commands as root. The startup time-syncing code inserts the ntp_server configuration value into a shell command without sanitization, and that command runs as root. The value can originate in an operator-built ramdisk, the Ironic kernel command line, or mDNS; a project Manager for node.owner can obtain node-level ramdisk shell access, with no known path to compromise the Ironic service.

The record

CVE
CVE-2026-66138
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
OpenStack
Product
Ironic Python Agent
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.0.0 <=11.2.1
  2. Affected versionversion=11.3.0 <=11.5.1
  3. Affected versionversion=11.6.0
  4. Affected versionversion=6.0.0 <=10.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenStack · Ironic Python Agentversion=11.0.0 <=11.2.1; version=11.3.0 <=11.5.1; version=11.6.0; version=6.0.0 <=10.2.3

Published CVSS scores

7.2MITRECVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo