CVE-2026-40226
6.4
MEDIUM
CVSS 3.1
EPSS 0.01%
Description
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
How to fix CVE-2026-40226
To remediate CVE-2026-40226, upgrade the affected package to a fixed version below.
- Debian/systemd—upgrade to 247.3-7+deb11u8 or later
Is CVE-2026-40226 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 247.3-7+deb11u8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.4 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |