CVE-2026-4105 MEDIUM

CVE-2026-4105: Systemd: systemd: privilege escalation via improper access control in registermachine d-bus method

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-284
Published March 13, 2026
Last update April 30, 2026

CVSS base score

6.7/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A flaw was found in systemd. The systemd-machined service contains an Improper Access Control vulnerability due to insufficient validation of the class parameter in the RegisterMachine D-Bus (Desktop Bus) method. A local unprivileged user can exploit this by attempting to register a machine with a specific class value, which may leave behind a usable, attacker-controlled machine object. This allows the attacker to invoke methods on the privileged object, leading to the execution of arbitrary commands with root privileges on the host system.

Key dates

02Disclosure timeline

March 13, 2026 CVE published
April 30, 2026 Record updated