CVE-2025-6946: WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in IPS Configuration

Published Dec 4, 2025
·
Updated

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the IPS module. This vulnerability requires an authenticated administrator session to a locally managed Firebox.

This issue affects Firebox: from 12.0 through 12.11.2.

Affected Software

31 affected components
WatchGuard Fireware OS>=12.0<=12.11.2
WatchGuard Firebox>=12.0<=12.11.2
All of the following
WatchGuard Fireware>=12.0.0<12.11.3
Any of the following
WatchGuard Firebox M270
WatchGuard Firebox M290
WatchGuard Firebox M370
WatchGuard Firebox M390
WatchGuard Firebox M440
WatchGuard Firebox M4600
WatchGuard Firebox M470
WatchGuard Firebox M4800
WatchGuard Firebox M5600
WatchGuard Firebox M570
WatchGuard Firebox M5800
WatchGuard Firebox M590
WatchGuard Firebox M670
WatchGuard Firebox M690
WatchGuard Firebox Nv5
WatchGuard Firebox T20
WatchGuard Firebox T25
WatchGuard Firebox T40
WatchGuard Firebox T45
WatchGuard Firebox T55
WatchGuard Firebox T70
WatchGuard Firebox T80
WatchGuard Firebox T85
WatchGuard Fireboxcloud
WatchGuard Fireboxv
All of the following
WatchGuard Fireware>=12.5<12.5.13
Any of the following
WatchGuard Firebox T15
WatchGuard Firebox T35

Event History

Dec 4, 2025
CVE Published
via MITRE·09:48 PM
Data Sourced
via MITRE·09:48 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-6946?

CVE-2025-6946 is classified as a high severity vulnerability due to its potential for stored Cross-site Scripting (XSS).

2

How do I fix CVE-2025-6946?

To fix CVE-2025-6946, update your WatchGuard Fireware OS or Firebox to a version later than 12.11.2 if you are running any version from 12.0 to 12.11.2.

3

Who is affected by CVE-2025-6946?

CVE-2025-6946 affects users with an authenticated administrator session on locally managed WatchGuard Firebox appliances running specified versions of Fireware OS.

4

What type of vulnerability is CVE-2025-6946?

CVE-2025-6946 is an Improper Neutralization of Input During Web Page Generation, specifically a stored XSS vulnerability.

5

What is the impact of CVE-2025-6946 on my system?

CVE-2025-6946 can allow an attacker to execute malicious scripts in the context of an authenticated administrator, potentially compromising the Firebox system.

Contact

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