CVE-2026-44277 Missing authorization in FortiAuthenticator

What is CVE-2026-44277?

CVE-2026-44277 is a critical missing authorization vulnerability in Fortinet FortiAuthenticator, published on 12 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0, FortiAuthenticator 6.6.0 through 6.6.8, FortiAuthenticator 6.5.0 through 6.5.6 may allow attacker to execute unauthorized code or commands via crafted requests.

Weakness: CWE-284

Which versions are affected by CVE-2026-44277?

It affects 1 product.

Products include Fortinet Fortiauthenticator.

How do I fix CVE-2026-44277?

No fix has been published for CVE-2026-44277 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-44277 being exploited?

There is no known exploitation of CVE-2026-44277 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Fortinet FortiAuthenticator

• CVE-2013-6990 Privilege escalation in n/a Critical 9.0
• CVE-2021-43067 Information disclosure in Fortinet FortiAuthenticator High 8.3
• CVE-2021-22124 Denial of service in Fortinet FortiSandbox, FortiAuthenticator High 7.5
• CVE-2015-1455 Hardcoded credentials in n/a High 7.5
• CVE-2025-53379 Information disclosure in FortiAuthenticator High 7.0

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-37fv-cfw9-w5r9.