Out-of-Bounds Read Vulnerability in Fortinet FortiAuthenticator

CVE-2025-53379

What is CVE-2025-53379?

A vulnerability in Fortinet's FortiAuthenticator product allows a remote unauthenticated attacker to exploit out-of-bounds read issues in versions 6.6.0 to 6.6.2 and all versions of 6.5. By sending a specially crafted request, an attacker may gain unauthorized access to sensitive information, which could be used for further attacks. It is critical for users to apply the necessary patches and updates as outlined in Fortinet's advisory.

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