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Critical Fortinet vulnerabilities fixed in FortiSandbox and FortiAuthenticator

Securityaffairs.Co •Pierluigi Paganini • May 13, 2026

Fortinet patched critical flaws in FortiSandbox and FortiAuthenticator that could let attackers remotely execute code on unpatched systems. Fortinet addressed two critical vulnerabilities affecting FortiSandbox and FortiAuthenticator. The flaws could allow attackers to execute arbitrary commands or code on unpatched systems. The first vulnerability, tracked as CVE-2026-44277, is an improper access control issue in FortiAuthenticator. […]

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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

CVEs (1)

CVE-2026-44277

Platforms (2)

FortiAuthenticator FortiSandbox