An uncontrolled resource consumption (denial of service) vulnerability in FortiSandbox and FortiAuthenticator login modules may allow an unauthenticated attacker to bring the device into an unresponsive state via specifically-crafted long request parameters.

Usage of hard-coded cryptographic keys to encrypt configuration files and debug logs in FortiAuthenticator versions before 6.3.0 may allow an attacker with access to the files or the CLI configuration to decrypt the sensitive data, via knowledge of the hard-coded key.