CVE-2026-21743: A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all…

PriorityP347high7.2CVSS 3.1

AVNACLPRHUINSUCHIHAH

EPSS

0.34%

25.8th percentile

A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
fortinet	fortiauthenticator	—	—
fortinet	fortiauthenticator	>= 6.3.0 < 6.6.7	6.6.7
fortinet	fortiauthenticator	6.3.0 – 6.3.5	—
fortinet	fortiauthenticator	6.4.0 – 6.4.11	—
fortinet	fortiauthenticator	6.5.0 – 6.5.7	—
fortinet	fortiauthenticator	6.6.0 – 6.6.6	—
fortinet	fortinet	—	—

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