CVE-2021-27406: Perfact Openvpn-Client

High severity, CVSS 8.8. EPSS: 1.2% chance of exploitation in the next 30 days.

An attacker can take leverage on PerFact OpenVPN-Client versions 1.4.1.0 and prior to send the config command from any application running on the local host machine to force the back-end server into initializing a new open-VPN instance with arbitrary open-VPN configuration. This could result in the attacker achieving execution with privileges of a SYSTEM user.

Affected products

• Perfact Openvpn-Client: up to and including 1.4.1.0

Published 2022-10-14. Last modified 2026-06-17.