CVE-2026-4105
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 257.13-1~deb13u1 |
| sid | Fixed | 260~rc3-1 |
| forky | Fixed | 260~rc3-1 |
| bullseye | Fixed | 247.3-7+deb11u8 |
| bookworm | Fixed | 252.39-1~deb12u2 |
References
- 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
- https://www.suse.com/security/cve/CVE-2026-4105.html
- https://security-tracker.debian.org/tracker/CVE-2026-4105
CWEs
CWE-284
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.