Incorrect authorization in FortiAuthenticator - CVE-2026-126243
Published: November 11, 2026
Vulnerability identifier: #VU165178
CSH Severity: Medium
CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-126243
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to incorrect authorization. An attacker can bypass authentication and gain unauthorized access. Full impersonation however requires the attacker to obtain pre-required id and data via other means.
Affected software
FortiAuthenticator
How to mitigate CVE-2026-126243
Install update from vendor's website.
FortiAuthenticator - addressed in versions 6.6.11, 8.0.4