---
id: CVE-2026-86101
title: >-
  An improper authorization vulnerability in WatchGuard Fireware OS's SAML login
  process allows a remote, authenticated SAML user with access only to the
  Access Portal to obtain unauthorized Mobile VPN with SSL access through a
  specially c…
summary: >-
  An improper authorization vulnerability in WatchGuard Fireware OS's SAML login
  process allows a remote, authenticated SAML user with access only to the
  Access Portal to obtain unauthorized Mobile VPN with SSL access through a
  specially c…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-285
  - CWE-863
vendor: watchguard
product: fireware
affected:
  - 'fireware >= 12.0, < 12.5.21'
  - 'fireware >= 12.12, < 12.12.3'
  - 'fireware >= 2025.0, < 2026.2.3'
  - 'fireware >= 2026.3, < 2026.3.2'
patched:
  - fireware 2026.3.2
published: '2026-09-30'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T19:40:03.017'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86101'
references:
  - url: 'https://psirt.watchguard.com/CVE-2026-86101'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
tags:
  - nvd
  - cve.org
epss: 0.00234
epssPercentile: 0.1422
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-30T14:22:36.042789Z'
scores:
  nvd: 6.5
  cna: 7.2
ingestedAt: '2026-09-29T23:52:50.549Z'
---

## Overview

An improper authorization vulnerability in WatchGuard Fireware OS's SAML login process allows a remote, authenticated SAML user with access only to the Access Portal to obtain unauthorized Mobile VPN with SSL access through a specially crafted request.

## Affected

- `fireware >= 12.0, < 12.5.21`
- `fireware >= 12.12, < 12.12.3`
- `fireware >= 2025.0, < 2026.2.3`
- `fireware >= 2026.3, < 2026.3.2`

## Remediation

Upgrade past the affected range:

- `fireware 2026.3.2`