CVE-2021-3626: Canonical Multipass

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

The Windows version of Multipass before 1.7.0 allowed any local process to connect to the localhost TCP control socket to perform mounts from the operating system to a guest, allowing for privilege escalation.

Affected products

• Canonical Multipass: before 1.7.0 (fixed in 1.7.0)

Published 2021-10-01. Last modified 2026-06-17.