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ProtonVPN for Windows

Privilege Escalation




ProtonVPN AG



Product version


Vulnerability Details

ProtonVPN for Windows suffers from a SYSTEM privilege escalation vulnerability through the ProtonVPN Service. This service establishes an NetNamedPipe endpoint that allows arbitrary installed applications to connect and call publicly exposed methods. The Connect method accepts a class instance argument that provides attacker control of the OpenVpncommand line. An attacker can specify a dynamic library plugin that should run for every new VPN connection. This plugin will execute code in the context of the SYSTEM user.

Vendor response

Vendor development team will release update

Disclosure timeline

03-23-2018 - Vendor disclosure via email
03-23-2018 - Vendor notified via Facebook
03-26-2018 - Vendor response via email
03-28-2018 - VerSprite Security extends advisory release timeline
04-16-2018 - Vendor notified of the advisory release

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