---
cve: "CVE-2026-4105"
severity: "MEDIUM"
cvss: 6.7
epss: "14%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-03-13 19:55:13"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T02:31:45+02:00"
---

# CVE-2026-4105

> 6.7 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:7299>
- <https://access.redhat.com/security/cve/CVE-2026-4105>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2447262>
- <https://github.com/systemd/systemd/security/advisories/GHSA-4h6x-r8vx-3862>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-4105) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_