CVE-2019-6693: Fortinet FortiOS Use of Hard-Coded Credentials Vulnerability

Medium severity, CVSS 6.5. Actively exploited: in CISA KEV since 2025-06-25. EPSS: 5.8% chance of exploitation in the next 30 days.

Use of a hard-coded cryptographic key to cipher sensitive data in FortiOS configuration backup file may allow an attacker with access to the backup file to decipher the sensitive data, via knowledge of the hard-coded key. The aforementioned sensitive data includes users' passwords (except the administrator's password), private keys' passphrases and High Availability password (when set).

Affected products

• Fortinet FortiOS: up to and including 5.6.10; from 6.0.0, up to and including 6.0.6; version 6.2.0 only

Published 2019-11-21. Last modified 2026-08-04.