CVE-2021-32593: Fortinet Fortiwan

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

A use of a broken or risky cryptographic algorithm vulnerability [CWE-327] in the Dynamic Tunnel Protocol of FortiWAN before 4.5.9 may allow an unauthenticated remote attacker to decrypt and forge protocol communication messages.

Affected products

• Fortinet Fortiwan: up to and including 4.5.8

Published 2022-04-06. Last modified 2026-06-17.