CVE-2025-13939
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-04

Last updated on: 2025-12-10

Assigner: WatchGuard Technologies, Inc.

Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Gateway Wireless Controller module) allows Stored XSS.This issue affects Fireware OS 11.7.2 up to and including 11.12.4+541730, 12.0 up to and including 12.11.4, 12.5 up to and including 12.5.13, and 2025.1 up to and including 2025.1.2.
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Meta Information
Published
2025-12-04
Last Modified
2025-12-10
Generated
2026-06-16
AI Q&A
2025-12-10
EPSS Evaluated
2026-06-14
NVD
CVE-2025-13939
Affected Vendors & Products
Showing 36 associated CPEs
Vendor Product Version / Range
watchguard fireware From 2025.1 (inc) to 2025.1.3 (exc)
watchguard firebox_t115-w *
watchguard firebox_t125 *
watchguard firebox_t125-w *
watchguard firebox_t145 *
watchguard firebox_t145-w *
watchguard firebox_t185 *
watchguard fireware From 11.7.2 (inc) to 12.11.5 (exc)
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 *
watchguard fireware From 11.7.2 (inc) to 12.5.14 (exc)
watchguard firebox_t15 *
watchguard firebox_t35 *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Mitigation Strategies

To mitigate the CVE-2025-13939 vulnerability, you should upgrade your WatchGuard Fireware OS to a fixed version. The issue is resolved in Fireware OS versions 2025.1.3, 12.11.5, and 12.5.14. No workaround is available, so applying the update is the immediate and recommended step. [1]

Executive Summary

This vulnerability is a Stored Cross-site Scripting (XSS) issue in the WatchGuard Fireware OS, specifically in the Gateway Wireless Controller module. It occurs due to improper neutralization of input during web page generation, allowing malicious scripts to be stored and executed in the context of the affected web application.

Impact Analysis

The vulnerability can allow attackers to execute malicious scripts in the context of the affected system's web interface. This can lead to unauthorized actions, data theft, session hijacking, or other malicious activities performed with the privileges of the affected user.

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