# CVE-2026-40224: systemd systemd-machined local privilege escalation via Varlink

Source: https://junglewise.ai/threats/cve-2026-40224-systemd-systemd-machined-local-privilege-escalation-via-varlink  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-10. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2026-40224 · Severity: medium · CVSS 6.7 · Published 2026-04-10

A security vulnerability in systemd-machined, a service used to manage virtual machines and containers, allows a standard user logged into a desktop session to gain full administrative (root) control of the system. This issue occurs when an attacker uses a specific communication protocol to bypass security boundaries and reach the core system namespace. An exploit could lead to a total compromise of the machine's data and operations, though it typically requires the attacker to have local access to a graphical desktop session.

Technologies: [Systemd Project Systemd](https://junglewise.ai/threats/technologies/systemd). Vendors: [Systemd Project](https://junglewise.ai/threats/vendors/systemd-project).

## Quick answers

**Is CVE-2026-40224 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40224 being exploited in the wild.

**How severe is CVE-2026-40224?** Medium severity, with a CVSS score of 6.7, published 10 April 2026.

**Which products and versions are affected?** systemd project systemd-machined 259 before 260, 259.3.

**Is there a fix for CVE-2026-40224?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-40224 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-40224?** Check whether you run Systemd Project Systemd. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A local privilege escalation vulnerability exists in systemd-machined versions 259 through 259.2. The flaw is rooted in incorrect authorization (CWE-863) where Varlink IPC calls can be leveraged to reach the root namespace from an unprivileged context. To exploit this, an attacker must be an unprivileged user logged into a local desktop graphical session; remote sessions like SSH are reportedly unaffected. Successful exploitation allows the user to escalate privileges to root. The issue is addressed in systemd version 260 and backported to 259.3. A workaround involves implementing a Polkit rule to restrict 'org.freedesktop.machine1.register-machine' actions to administrative users.

## Affected products

- systemd project systemd-machined 259 before 260, 259.3

## Timeline

- 2026-03-04: advisory: Vendor advisory published on GitHub
- 2026-04-10: disclosed: CVE published to NVD
- 2026-04-27: other: NVD analysis and CPE enrichment completed

## References

- [https://github.com/systemd/systemd/security/advisories/GHSA-6pwp-j5vg-5j6m](https://github.com/systemd/systemd/security/advisories/GHSA-6pwp-j5vg-5j6m)

## Related threats

- [systemd systemd-journald ANSI escape sequence injection in wall messages](https://junglewise.ai/threats/cve-2026-40228-systemd-systemd-journald-ansi-escape-sequence-injection-in-wall)
- [systemd denial of service via malformed IPC API call](https://junglewise.ai/threats/cve-2026-40227-systemd-denial-of-service-via-malformed-ipc-api-call)
- [systemd denial of service via assertion failure in system units](https://junglewise.ai/threats/cve-2026-40223-systemd-denial-of-service-via-assertion-failure-in-system-units)
- [systemd privilege escalation via world-writable SUID files in timers](https://junglewise.ai/threats/cve-2016-10156-systemd-privilege-escalation-via-world-writable-suid-files-in)