CVE-2026-21743
High
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.
SeverityHigh
CVSS7.2
Exploit probability—
Product
Fortinet Fortiauthenticator
PublishedFeb 10, 2026
First seenFeb 10, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- fortinet fortiauthenticator6.6.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fortinet fortiauthenticator | 6.3.0 ≤ v < 6.6.7 | 6.6.7 |
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