CVE-2021-32591: Fortinet FortiADC

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

A missing cryptographic steps vulnerability in the function that encrypts users' LDAP and RADIUS credentials in FortiSandbox before 4.0.1, FortiWeb before 6.3.12, FortiADC before 6.2.1, FortiMail 7.0.1 and earlier may allow an attacker in possession of the password store to compromise the confidentiality of the encrypted secrets.

Affected products

• Fortinet FortiADC: from 5.0.0, up to and including 5.4.4; from 6.0.0, up to and including 6.0.3; from 6.1.0, up to and including 6.1.3; version 6.2.0 only; version 6.2.1 only
• Fortinet FortiMail: any version; from 5.0, up to and including 5.6.3; from 6.0.0, up to and including 6.0.11; from 6.2.0, up to and including 6.2.7; from 6.4.0, up to and including 6.4.5; version 7.0.0 only; …
• Fortinet FortiSandbox: from 3.2.0, up to and including 3.2.2; version 4.0.0 only
• Fortinet FortiWeb: from 5.7.0, up to and including 5.7.3; from 5.8.0, up to and including 5.8.7; from 6.0.0, up to and including 6.0.7; from 6.1.0, up to and including 6.1.2; from 6.2.0, up to and including 6.2.4; from 6.3.0, up to and including 6.3.11; …

Published 2021-12-08. Last modified 2026-06-17.