CVE-2025-53744: 
FortiOS vulnerability analysis and mitigation

CVE-2025-53744 is an incorrect privilege assignment vulnerability [CWE-266] discovered in FortiOS Security Fabric. The vulnerability was initially disclosed on August 12, 2025, affecting multiple versions of FortiOS including versions 7.6.0 through 7.6.2, 7.4.0 through 7.4.7, and all versions of 7.2, 7.0, and 6.4 (Fortinet Advisory, NVD).

The vulnerability is classified as a CWE-266 (Incorrect Privilege Assignment) issue in the Security Fabric component. It has been assigned a CVSSv3.1 base score of 7.2 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, and high privileges required for exploitation (NVD).

The vulnerability allows a remote authenticated attacker with high privileges to escalate their privileges to super-admin level through registering the device to a malicious FortiManager. This could potentially give attackers complete control over the affected system (Fortinet Advisory).

Fortinet has released patches to address this vulnerability. Users of FortiOS 7.6 should upgrade to version 7.6.3 or above, while users of FortiOS 7.4 should upgrade to version 7.4.8 or above. Users of FortiOS versions 7.2, 7.0, and 6.4 are advised to migrate to a fixed release. Fortinet provides an upgrade path tool at their documentation site to assist with the upgrade process (Fortinet Advisory).