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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.

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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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