CVE-2026-4105
Systemd: systemd: privilege escalation via improper access control in registermachine d-bus method
- State
- Published
- Severity
- 6.7 Medium
- Published
- Mar 13, 2026
- Updated
- Sep 1, 2026
- Reserved
- Mar 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.7 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-284 Improper Access Control
Affected Products
| Product | Versions |
|---|---|
Red Hat Hardened ImagesRed Hat |
|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat |
References
- RHSA-2026:7299vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-4105vdb-entry
- RHBZ#2447262issue-tracking
- https://github.com/systemd/systemd/security/advisories/GHSA-4h6x-r8vx-3862
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