CVE-2026-84393

High8.1Published on September 8, 2026

A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6, FortiProxy 7.6.2 through 7.6.6 may allow attacker to information disclosure via <insert attack vector here>

CVSS score8.1 / 10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)CWE-297

Vulnerabilities

Fortinet Fixes Critical Authentication Flaws in FortiMonitorOnSight and Chrome Extension

Fortinet patched 10 flaws, including critical JWT auth bypass in FortiMonitorOnSight and Chrome extension proxy bug. Update FortiPAM and extension now.

Sep 9, 202617:445 min readRead

This product uses the NVD API but is not endorsed or certified by the NVD.

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Fortinet Fixes Critical Authentication Flaws in FortiMonitorOnSight and Chrome Extension