---
id: CVE-2026-84391
title: >-
  A use of uninitialized variable vulnerability in Fortinet FortiAnalyzer 7.6.3
  through 7.6.6 may allow attacker to denial of service via <insert attack
  vector here>
summary: >-
  A use of uninitialized variable vulnerability in Fortinet FortiAnalyzer 7.6.3
  through 7.6.6 may allow attacker to denial of service via <insert attack
  vector here>
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-457
vendor: Fortinet
product: FortiAnalyzer
affected:
  - FortiAnalyzer >= 7.6.3 <= 7.6.6
published: '2026-09-08'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T18:35:10.323'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84391'
references:
  - url: 'https://fortiguard.fortinet.com/psirt/FG-IR-26-172'
    label: psirt@fortinet.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T17:29:24.379449Z'
scores:
  nvd: 6.5
  cna: 5.9
ingestedAt: '2026-09-08T19:08:49.602Z'
epss: 0.00411
epssPercentile: 0.32641
---

## Overview

A use of uninitialized variable vulnerability in Fortinet FortiAnalyzer 7.6.3 through 7.6.6 may allow attacker to denial of service via <insert attack vector here>

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.