CVE-2026-40226
nspawn in systemd 233 through 259 before 260 vulnerability
nspawn · In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
MSRC advisory May 27, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-40226
- Affected products
- In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file. · In In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file. · In
What happened
Information published.
What it means for your business
In In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file. (CVE-2026-40226) was added to Microsoft’s security update guidance. Information published. PremierePC tracks MSRC advisories for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
Sources
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