CVE-2025-4804

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

Published May 16, 2025 CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the spamBlocker module. This vulnerability requires an authenticated administrator session to a locally managed Firebox.

Remediation

Vendor Solution

Fireware OS 12.11.2, Fireware OS 12.5.13

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-15550 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the spamBlocker module. This vulnerability requires an authenticated administrator session to a locally managed Firebox. This issue affects Fireware OS: from 12.0 through 12.11.1.
History
Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the spamBlocker module. This vulnerability requires an authenticated administrator session to a locally managed Firebox. This issue affects Fireware OS: from 12.0 through 12.11.1. Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the spamBlocker module. This vulnerability requires an authenticated administrator session to a locally managed Firebox.
First Time appeared Watchguard
Watchguard fireware Os
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard fireware Os
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the spamBlocker module. This vulnerability requires an authenticated administrator session to a locally managed Firebox. This issue affects Fireware OS: from 12.0 through 12.11.1.
Title WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Hotpot Configuration
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WatchGuard
Published
Updated
Aug 8, 2026, 2:25 AM
Reserved
May 16, 2025, 12:27 AM
Status
Deferred
Published
May 16, 2025, 9:15 PM
Modified
Aug 8, 2026, 3:16 AM