CVE-2026-44277: Fortinet FortiAuthenticator improper access control in API

CVE-2026-44277 · Severity: critical · CVSS 9.8 · Published 2026-05-12

FortiAuthenticator is a centralized identity management appliance used to manage user authentication and digital certificates. A critical security flaw in its API allows an unauthenticated attacker to remotely execute unauthorized commands or code. This could lead to a complete takeover of the authentication system, potentially compromising user credentials and network access controls.

Technologies: Fortinet FortiAuthenticator. Vendors: Fortinet.

Quick answers

Is CVE-2026-44277 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-44277 being exploited in the wild.
How severe is CVE-2026-44277?
Critical severity, with a CVSS score of 9.8, published 12 May 2026.
Which products and versions are affected?
Fortinet FortiAuthenticator 8.0.0, 8.0.2, 6.6.0 through 6.6.8, 6.5.0 through 6.5.6.
Is there a fix for CVE-2026-44277?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-44277 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-44277?
Check whether you run Fortinet FortiAuthenticator at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An improper access control vulnerability (CWE-284) exists within the API component of Fortinet FortiAuthenticator. The flaw allows a remote, unauthenticated attacker to bypass security restrictions by sending specially crafted network requests to affected API endpoints. Successful exploitation enables the execution of unauthorized code or system commands with the privileges of the application. The vulnerability affects versions 8.0.0, 8.0.2, 6.6.x (up to 6.6.8), and 6.5.x (up to 6.5.6). Users are advised to upgrade to versions 8.0.3, 6.6.9, or 6.5.7 respectively, or disable API access on exposed interfaces as a workaround.

Affected products

  • Fortinet FortiAuthenticator 8.0.0, 8.0.2, 6.6.0 through 6.6.8, 6.5.0 through 6.5.6

Timeline

  • 2026-05-12: disclosed: Initial publication of the advisory by Fortinet
  • 2026-05-12: advisory: NVD published the CVE record

References

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