CVE-2021-36171: Fortinet Fortiportal

High severity, CVSS 8.1. EPSS: 1.2% chance of exploitation in the next 30 days.

The use of a cryptographically weak pseudo-random number generator in the password reset feature of FortiPortal before 6.0.6 may allow a remote unauthenticated attacker to predict parts of or the whole newly generated password within a given time frame.

Affected products

• Fortinet Fortiportal: up to and including 4.0.4; from 4.1.0, up to and including 4.1.2; from 4.2.0, up to and including 4.2.4; from 5.0.0, up to and including 5.0.3; from 5.1.0, up to and including 5.1.2; from 5.2.0, before 5.2.7 (fixed in 5.2.7); …

Published 2022-03-01. Last modified 2026-06-17.