Research · Jan 27, 2026
Authentication Bypass Vulnerability Discovered in Fortinet Products
A critical authentication bypass vulnerability has been identified in multiple Fortinet products, potentially exposing users to unauthorized access.
What changed
Fortinet has reported an authentication bypass vulnerability affecting several of its products. This flaw allows unauthorized users to gain access through alternate paths or channels, posing significant security risks.
The vulnerability falls under CWE-288, indicating a serious issue with authentication mechanisms in the affected versions.
Who is affected
Numerous Fortinet products are impacted by this vulnerability, which spans multiple versions of their software. Organizations using these products should be particularly vigilant.
The following products are affected:
- FortiAnalyzer versions 7.6.0 to 7.6.5, 7.4.0 to 7.4.9, 7.2.0 to 7.2.11, and 7.0.0 to 7.0.15.
- FortiManager versions 7.6.0 to 7.6.5, 7.4.0 to 7.4.9, 7.2.0 to 7.2.11, and 7.0.0 to 7.0.15.
- FortiNAC-F versions 7.6.3 to 7.6.5.
- FortiOS versions 7.6.0 to 7.6.5, 7.4.0 to 7.4.10, 7.2.0 to 7.2.12, and 7.0.0 to 7.0.18.
What to do
Organizations using the affected Fortinet products should take immediate action to mitigate the risks associated with this vulnerability. It is crucial to review security configurations and apply any available patches.
Regular security audits and updates can help in maintaining a robust defense against potential exploits.
- Assess the current versions of Fortinet products in use and identify if they fall within the affected ranges.
- Implement recommended patches or updates provided by Fortinet as soon as possible.
- Enhance monitoring of network activity to detect any unauthorized access attempts.