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CVE-2026-40226

Published: Apr 10, 2026Updated: Apr 17, 2026 Sources: CVE List NVDCWE-348
NVD MITRE
6.4CVSSMEDIUM
EPSS Score
0.1%
Top 99.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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

CVSS Vector Breakdown

AV:LAC:HPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-348

Affected Products

systemdsystemd
Embedded
Operating Systems / linux-distro
systemdsystemd project
On-prem
Operating Systems / linux-distro
systemdoss-projectDEOperating Systemsaka systemd
systemd projectoss-projectOperating Systemsaka systemd

Exploitability

Official Patch Available

References

https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx
github.com

Timeline

Published
Apr 10, 2026
Last Updated
Apr 17, 2026

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