FORTIAUTHENTICATOR · CVE-2026-126243 · Vendor
FIX → 8.0.4 · 6.6.11 ✓ verified
FortiAuthenticator 8.0.0 through 8.0.3 and 6.6.0 through 6.6.10 have an incorrect authorization flaw. An attacker may bypass authentication and gain unauthorized access, though full impersonation also requires identifiers and data obtained by other means.
first public Nov 11, 2026 · 2 sources
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Teams running self-hosted FortiAuthenticator 8.0.0-8.0.3 or 6.6.0-6.6.10. Fortinet describes an unauthenticated attack through the API component; full impersonation also needs an id and data the attacker obtains by other means. Versions 8.0.4+, 6.6.11+ and other branches not listed can skip it.
Not affected if outside-affected-versions
Who cares authentication, fortiauthenticator, fortinet, self-hosted
get system status8.0.0-8.0.3 or 6.6.0-6.6.10A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an attacker to bypass authentication and gain unauthorized access. Full impersonation however requires the attacker to obtain pre-required id and data via other means.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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Upgrade to 8.0.4 · 6.6.11
8.0.0-8.0.3 to 8.0.4 or above; 6.6.0-6.6.10 to 6.6.11 or above