Is CVE-2026-40226 actively exploited?

CVE-2026-40226 has no public evidence of in-the-wild exploitation as of 2026-04-17.

What is the CVSS score for CVE-2026-40226?

CVE-2026-40226 has a CVSS score of 6.4 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-40226?

Patch guidance is available from systemd project security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-40226.

CVE-2026-40226 - remediation guidance & executive summary

Q: Which products are affected by CVE-2026-40226?

3 products: systemd project systemd, systemd project systemd, systemd project systemd.

Description

In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: high
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-348

Metadata

Primary Vendor: SYSTEMD_PROJECT
Published: 4/10/2026
Last Modified: 4/17/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

systemd_project : systemdsystemd_project : systemdsystemd_project : systemd

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-40226. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-40226

View on NIST NVD

CVE-2026-40226 vulnerability