CVE-2025-6946

Description

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.

CVSS v3.1 Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
watchguard	fireware	12.0.0 — 12.11.3
watchguard	firebox_m270	All
watchguard	firebox_m290	All
watchguard	firebox_m370	All
watchguard	firebox_m390	All
watchguard	firebox_m440	All
watchguard	firebox_m4600	All
watchguard	firebox_m470	All
watchguard	firebox_m4800	All
watchguard	firebox_m5600	All
watchguard	firebox_m570	All
watchguard	firebox_m5800	All
watchguard	firebox_m590	All
watchguard	firebox_m670	All
watchguard	firebox_m690	All
watchguard	firebox_nv5	All
watchguard	firebox_t20	All
watchguard	firebox_t25	All
watchguard	firebox_t40	All
watchguard	firebox_t45	All
watchguard	firebox_t55	All
watchguard	firebox_t70	All
watchguard	firebox_t80	All
watchguard	firebox_t85	All
watchguard	fireboxcloud	All
watchguard	fireboxv	All
watchguard	fireware	12.5 — 12.5.13
watchguard	firebox_t15	All
watchguard	firebox_t35	All

References

Advisories & Patches

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00011

Frequently Asked Questions

What is CVE-2025-6946? +

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. It has a CVSS v3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2025-6946? +

CVE-2025-6946 has a CVSS v3.1 score of 4.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-6946? +

CVE-2025-6946 affects products from watchguard, specifically: firebox_m270, firebox_m290, firebox_m370, firebox_m390, firebox_m440, firebox_m4600, firebox_m470, firebox_m4800, firebox_m5600, firebox_m570, firebox_m5800, firebox_m590, firebox_m670, firebox_m690, firebox_nv5, firebox_t15, firebox_t20, firebox_t25, firebox_t35, firebox_t40, firebox_t45, firebox_t55, firebox_t70, firebox_t80, firebox_t85, fireboxcloud, fireboxv, fireware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-6946? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-40282

WeGIA is a web manager for charitable institutions. In versions prior to 3.6.10, a Stored Cross-Site Scripting (XSS) vulnerability allows …

CVE-2026-3317

Reflected Cross-Site Scripting (XSS) vulnerability in Navigate Content Management System. The vulnerability is present in the '/blog' endpoint because user …

CVE-2025-10354

Cross-Site Scripting (XSS) vulnerability reflected in Semantic MediaWiki. This vulnerability allows an attacker to execute JavaScript code in the victim's …

CVE-2026-41456

Bludit CMS prior to commit 6732dde contains a reflected cross-site scripting vulnerability in the search plugin that allows unauthenticated attackers …

CVE-2026-40872

mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, the admin dashboard's Autodiscover …

CVE-2026-40878

mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, the mailcow web interface …