SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-40226

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

MEDIUM 6.4EPSS 0.07%

Does this matter?

Lower severity and a low EPSS score (0.07%). Track it; it rarely justifies an emergency change on its own.

Description

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

CVSS 3.1
6.4 MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
0.07% probability · 0th percentile
CISA KEV
Not listed
Weakness
CWE-348
Affected
systemd project/systemd
Source
cve@mitre.org

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.