CVE-2025-4805 - CVE House

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Status published Medium CVE-2025-4805

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Acces Portal Configuration

4.8 CVSS

Vulnerability Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS. This vulnerability requires an authenticated administrator session to a locally managed Firebox. This issue affects Fireware OS: from 12.0 through 12.11.1.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Simone Paganessi (https://www.linkedin.com/in/simonepaganessi)

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00007

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Affected Vendor

WatchGuard

View all reports →

Affected Software

Fireware OS

Vulnerable Versions:

12.0

Timeline

Official Publish: May 16th, 2025

Last Modified: September 19th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement