6.8
Medium
CVE-2026-21743 A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all…
Description
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| FortiAuthenticator 6.6 | 6.6.0 → 6.6.6 | No fix stated |
| FortiAuthenticator 6.5 | 6.5.0 → 6.5.7 | No fix stated |
| FortiAuthenticator 6.4 | 6.4.0 → 6.4.11 | No fix stated |
| FortiAuthenticator 6.3 | 6.3.0 → 6.3.5 | No fix stated |
Other CVEs of FortiAuthenticator
The 11 CVEs of FortiAuthenticator →
CVE-2025-53379
A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all…
7.0
High
CVE-2026-44277
A improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0,…
9.1
Critical
CVE-2025-59923
An improper access control vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5…
2.6
Low
CVE-2025-57823
A direct request ('forced browsing') vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6,…
2.6
Low