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Vulnerability · Published Mar 13, 2026 · Assigned by redhat

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

Medium 6.7

In plain English

A medium-severity improper access control in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.7Medium
Exploit odds (30 days)0.1%top 95.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12systemd252.39-1~deb12u2DEBIAN-CVE-2026-4105
Debian:13systemd257.13-1~deb13u1DEBIAN-CVE-2026-4105
Debian:14systemd260~rc3-1DEBIAN-CVE-2026-4105
Ubuntu:22.04:LTSsystemdno fix listedUBUNTU-CVE-2026-4105
Ubuntu:24.04:LTSsystemdno fix listedUBUNTU-CVE-2026-4105
Ubuntu:25.10systemdno fix listedUBUNTU-CVE-2026-4105

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references

Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

References