---
id: CVE-2025-1239
title: >-
  A stored cross-site scripting (XSS) vulnerability exists in the management
  interface of WatchGuard Firebox appliances via the Blocked Sites list
summary: >-
  A stored cross-site scripting (XSS) vulnerability exists in the management
  interface of WatchGuard Firebox appliances via the Blocked Sites list. An
  authenticated remote attacker with administrator privileges could exploit this
  vulnerabi…
severity: none
cwe:
  - CWE-79
published: '2025-02-14'
updated: '2026-08-08'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-1239'
references:
  - url: 'https://psirt.watchguard.com/CVE-2025-1239'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
  - url: 'https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00002'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
tags:
  - nvd
epss: 0.00554
epssPercentile: 0.43883
ingestedAt: '2026-08-08T03:20:31.547Z'
---

## Overview

A stored cross-site scripting (XSS) vulnerability exists in the management interface of WatchGuard Firebox appliances via the Blocked Sites list. An authenticated remote attacker with administrator privileges could exploit this vulnerability to execute arbitrary JavaScript code in the Firebox management interface of another management user.

## Remediation

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