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
CVSS 5.5
EPSS 0.01%
1 PoC
Published: April 10, 2026 | Last Modified: April 10, 2026
Description
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
Ghostwire Analysis — What This Means Practically
Exploitation Probability (EPSS): Low — 0.01% (0th percentile)
Low exploitation probability based on current threat landscape data. Standard patching timeline is appropriate.
- Medium CVSS score indicates moderate risk — exploitation requires specific conditions or results in limited impact.
- 1 proof-of-concept exploit available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.
This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.
Proof-of-Concept Exploits (1)
Security Coverage (2 articles)
References