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FortiAuthenticator

www.fortiguard.com • May 13, 2026

An Improper Access Control vulnerability [CWE-284] in FortiAuthenticator may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests.

FortiAuthenticator Cloud is not impacted by the issue and hence customers do not need to perform any action.

Workarounds: Disable API access for exposed interfaces via Network -> Interfaces -> Access Rights .

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical RCE Vulnerabilities Discovered in Fortinet Products Fortinet has identified multiple critical vulnerabilities in its FortiSandbox and FortiAuthenticator products, which could allow unauthenticated attackers to execute arbitrary code remotely. The vulnerabilities are tracked as CVE-2026-44277 and CVE-2026-26083, both published on May 12, 2026. FortiAuthenticator's flaw stems from improper access control, while FortiSandbox suffers from a missing authorization issue. These vulnerabilities affect various versions of FortiAuthenticator and FortiSandbox, with a CVSS score of 9.1 indicating their critical nature. Although no active exploitation has been reported, Fortinet's products have been frequently targeted in the past, raising concerns about potential future attacks. Administrators are urged to apply patches immediately to mitigate risks. Fortinet's advisory emphasizes the importance of maintaining updated systems to prevent exploitation. 60 sources 73

Extracted Entities

Platforms (2)

FortiAuthenticator FortiAuthenticator Cloud