Description

A authentication bypass using an alternate path or channel vulnerability in Fortinet FortiManager 7.6.1, FortiManager 7.4.3 through 7.4.5, FortiManager 7.2.5 through 7.2.9, FortiManager Cloud 7.6.1, FortiManager Cloud 7.4.3 through 7.4.5, FortiManager Cloud 7.2.5 through 7.2.9 may allow attacker to improper access control via <insert attack vector here>

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.1",
  "pubDate": "2026-08-12T13:17:25.227Z",
  "pubdate": "2026-08-12T13:17:25.227Z",
  "executiveSummary": "An authentication bypass vulnerability has been identified in Fortinet FortiManager and FortiManager Cloud, specifically involving an alternate path or channel weakness.\nThis vulnerability allows unauthenticated remote attackers to achieve improper access control, potentially bypassing standard security boundaries and authentication mechanisms.\nThe affected products include FortiManager version 7.6.1, versions 7.4.3 through 7.4.5, and versions 7.2.5 through 7.2.9, as well as their corresponding FortiManager Cloud deployments.\nThe risk implications are severe, as successful exploitation could grant unauthorized actors the ability to interact with sensitive management functions without valid credentials.\nAttacker capabilities include bypassing authentication checks via alternative routing or functional pathways exposed by the application logic.\nOrganizations utilizing the specified software versions are exposed to unauthorized access risks and should prioritize remediation actions immediately upon vendor advisory updates.",
  "technicalDetails": "The vulnerability is rooted in an improper authentication implementation categorized as an authentication bypass using an alternate path or channel flaw.\nThis architectural weakness occurs when the software exposes functional pathways, interfaces, or control channels that do not properly enforce the same authentication and authorization checks as the primary administrative entry points.\nThe vulnerable components reside within the management and control services of FortiManager and FortiManager Cloud across versions 7.6.1, 7.4.3 through 7.4.5, and 7.2.5 through 7.2.9.\nExploitation requires network exposure to the vulnerable management interface or exposed service endpoints.\nAn attacker initiates exploitation by routing requests through the alternate path or channel, bypassing the standard cryptographic or session-based verification routines normally required for administrative access.\nBecause the application fails to validate the session state or identity credentials correctly along this alternate execution flow, the request is processed as if it originated from a validated and trusted administrative entity.\nThe attack flow proceeds with the attacker submitting crafted requests designed to interact with backend management routines, achieving improper access control.\nPost-exploitation impact includes unauthorized interaction with managed devices, configuration manipulation, or further compromise of the centralized management infrastructure depending on the specific functionality exposed via the alternate channel."
}