CVE-2026-40223 — MEDIUM (4.7)

Q: What is CVE-2026-40223?

CVE-2026-40223 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User= unit exists and is running.

Vulnerability Description

In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User=<unset> unit exists and is running.

CVSS Score

4.7

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Systemd Project	Systemd	>= 258, < 260

Related Weaknesses (CWE)

CWE-696

References

https://github.com/systemd/systemd/security/advisories/GHSA-x4h8-rrrg-q78fVendor Advisory

FAQ

What is CVE-2026-40223?

CVE-2026-40223 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User=<unset> unit exists and is running.

How severe is CVE-2026-40223?

CVE-2026-40223 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40223?

Check the references section above for vendor advisories and patch information. Affected products include: Systemd Project Systemd.