Critical [CVE-2026-44277] Improper access control on API endpoints
This critical-severity Fortinet advisory covers CVE-2026-44277 affecting FortiAuthenticator.
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Summary
CVSSv3 Score:
9.1
An Improper Access Control vulnerability [CWE-284] in FortiAuthenticator may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests.
Revised on 2026-05-12 00:00:00
- FortiAuthenticator 8.0: 8.0.2
- FortiAuthenticator 8.0: 8.0.0
- FortiAuthenticator 6.6: 6.6.0 through 6.6.8
- FortiAuthenticator 6.5: 6.5.0 through 6.5.6
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- FortiAuthenticator 8.0: 8.0.3
- FortiAuthenticator 6.6: 6.6.9
- FortiAuthenticator 6.5: 6.5.7
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Upgrade per the Affected/Solution table: FortiAuthenticator 8.0: 8.0.3; FortiAuthenticator 6.6: 6.6.9; FortiAuthenticator 6.5: 6.5.7.
- Disable API access for exposed interfaces via Network -> Interfaces -> Access Rights.
- Acknowledgement Internally discovered as part of a Fortinet audit.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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