Fortinet FortiSandbox login_user_profile Hard-Coded Credentials Authentication Bypass Vulnerability

October 15th, 2026
ZDI-26-771 ZDI-CAN-31870

CVE ID

CVE-2026-107656

CVSS Score

7.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Vendors

Fortinet

Affected Products

FortiSandbox

Vulnerability Details

This vulnerability allows remote attackers to bypass authentication on affected installations of Fortinet FortiSandbox. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the authentication mechanism. The issue results from the use of hard-coded credentials. An attacker can leverage this vulnerability to bypass authentication on the system.

Additional Details

Fortinet has issued an update to correct this vulnerability. More details can be found at:
https://fortiguard.fortinet.com/psirt/FG-IR-26-185

Disclosure Timeline

  • 2026-06-19 - Vulnerability reported to vendor
  • 2026-10-15 - Coordinated public release of advisory
  • 2026-10-15 - Advisory Updated

Credit

Jason McFadyen of TrendAI Research

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