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CVE-2025-4804: WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Hotpot Configuration

4.8 CVSS

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.

Classification

CVE ID: CVE-2025-4804

CVSS Base Severity: MEDIUM

CVSS Base Score: 4.8

CVSS 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

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Vendor: WatchGuard

Product: Fireware OS

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.06% (probability of being exploited)

EPSS Percentile: 17.89% (scored less or equal to compared to others)

EPSS Date: 2025-06-14 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-4804
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00006

Timeline