CVE-2017-7520: Openvpn

High severity, CVSS 7.4. EPSS: 3.4% chance of exploitation in the next 30 days.

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service and/or possibly sensitive memory leak triggered by man-in-the-middle attacker.

Affected products

• Openvpn Openvpn: up to and including 2.3.16; version 2.4.0 only; version 2.4.1 only; version 2.4.2 only

Published 2017-06-27. Last modified 2026-06-17.