6.7
Medium
CVE-2026-4105 Systemd: systemd: privilege escalation via improper access control in registermachine d-bus method
Description
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HExploitable with local access to the machine, with an ordinary account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Hardened Images 260.1 | earliest → < 260.1-2.1.hum1 | 260.1-2.1.hum1 |
| Red Hat OpenShift Container Platform 4 | Versions not published | |
| Red Hat OpenShift AI (RHOAI) | Versions not published |
References
- RHSA-2026:7299 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2447262 bugzilla.redhat.com
- github.com github.com
Timeline
- Published
- Last modified
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