CVE-2026-4105
Improper Access Control in systemd-machined Enables Root Execution
Publication date: 2026-03-13
Last updated on: 2026-04-30
Assigner: Red Hat, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| systemd | systemd | From 259 (inc) |
| systemd | systemd | From 259.4 (inc) |
| systemd | systemd | to 260 (inc) |
| systemd | systemd | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-284 | The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the systemd-machined service of systemd. It is caused by improper access control due to insufficient validation of the class parameter in the RegisterMachine D-Bus method.
A local unprivileged user can exploit this flaw by registering a machine with a specific class value, which may result in leaving behind a usable, attacker-controlled machine object.
This allows the attacker to invoke methods on a privileged object, ultimately enabling the execution of arbitrary commands with root privileges on the host system.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to an attacker gaining root-level access on the affected system.
With root privileges, the attacker can execute arbitrary commands, potentially compromising the entire system, accessing sensitive data, modifying system configurations, or disrupting services.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know