CVE-2026-121530 · Vendor
NO FIX YET · SEE WHAT TO DO
Fortinet FortiOS 7.6.0 through 7.6.6 has an improper authentication flaw where an invalid token is accepted after a valid username and password are entered. A remote attacker with valid credentials can gain access control they should not have.
first public Nov 10, 2026 · 1 source
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Organisations running FortiOS 7.6.0 through 7.6.6 on firewalls or VPN gateways that accept remote logins. Attackers need a valid username and password first. Systems on other FortiOS branches are outside the stated range.
Not affected if no-remote-admin-or-vpn-login, other-fortios-versions
Who cares firewall, fortinet, fortios, vpn
7.6.0 through 7.6.67.6.0 through 7.6.6; the exact fixed version is unknown from the sourcesA improper authentication vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6 may allow a remote authenticated attacker to gain improper access control via an invalid token after entering a valid username and password
This page as .md · .json · CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
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