FortiOS 6.4.0 Improper Authentication Vulnerability


FortiOS 6.4.0 suffers from improper authentication vulnerability


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An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.


Vulnerable Systems:

FortiOS 6.4.0

FortiOS 6.2.0 to 6.2.3

FortiOS 6.0.9 and below 


CVE Information:



Disclosure Timeline:
Published Date:7/24/2020

Categories: News