What’s Vulnerable › Vulnerabilities
CVE-2026-21743
- Severity: high (CVSS 7.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-10 · updated 2026-06-17
- Weakness: CWE-862
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
- Fortinet FortiAuthenticator: from 6.3.0 before 6.6.7 — fixed in 6.6.7
How to fix
Upgrade to a fixed version: Fortinet FortiAuthenticator 6.6.7. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-21743 or the next vulnerability affects your stack