CVE-2021-44466: Leap Bitmask Riseup VPN

High severity, CVSS 7.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.

Affected products

• Leap Bitmask Riseup VPN: version 0.21.6 only

Published 2021-12-30. Last modified 2026-06-17.