---
id: "CVE-2026-126246"
page: "https://infrastack.ai/live/CVE-2026-126246"
kind: "vulnerability"
aliases: ["CVE-2026-126246"]
title: "Fortinet FortiAuthenticator: null pointer flaw lets unauthenticated HTTP requests crash service"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["fortiauthenticator", "fortinet", "self-hosted", "vendor"]
not_affected_if: ["unaffected-version"]
published_at: "2026-11-11T22:17:24+00:00"
first_seen_at: "2026-11-11T22:29:32+00:00"
updated_at: "2026-11-11T22:31:59+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126246", "first_seen_at": "2026-11-11T22:29:32+00:00"}]
exploit_sources: []
---

# Fortinet FortiAuthenticator: null pointer flaw lets unauthenticated HTTP requests crash service

Link for people: https://infrastack.ai/live/CVE-2026-126246 (this .md is for agents)

A null pointer dereference in FortiAuthenticator 8.0.0 through 8.0.3 and 6.6.0 through 6.6.10 can be triggered by HTTP requests. An unauthenticated attacker can cause a denial of service.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the FortiAuthenticator firmware version in the admin interface against the affected ranges: `8.0.0` through `8.0.3` and `6.6.0` through `6.6.10`

## Fix

- Move to a version outside the affected ranges; the sources do not name the fixed release

## Timeline

- 2026-11-11T22:29:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126246

## From the sources

A null pointer dereference vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to perform a denial of service attack via http requests.

---

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