CVE-2026-40226

low-risk
Published 2026-04-10

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

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.4/10 Medium
LOCAL / HIGH complexity

References (1)

https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx
22
/ 100
low-risk
Severity 17/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal