CVE-2026-46447Network attack vector

Boot script execution via kernel parameter injection

Published Jun 3, 2026 · Updated Jun 3, 2026

Boot script injection in affected OpenStack Ironic releases allows remote authenticated users to execute iPXE scripts during node boot. The kernel command-line override code fails to reject script-control characters in values drawn from node.driver_info or node.instance_info before incorporating them into boot data. The user must be permitted to add or modify either node property, and successful injection changes code executed on the provisioned bare-metal node.

CVSS severity7.7
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Boot script injection in affected OpenStack Ironic releases allows remote authenticated users to execute iPXE scripts during node boot. The kernel command-line override code fails to reject script-control characters in values drawn from node.driver_info or node.instance_info before incorporating them into boot data. The user must be permitted to add or modify either node property, and successful injection changes code executed on the provisioned bare-metal node.

The record

CVE
CVE-2026-46447
Published
Jun 3, 2026
Updated
Jun 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-669, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
5.8MITRECVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-669Incorrect Resource Transfer Between Spheres
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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