CVE-2025-13939

UNKNOWN 0.0

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Gateway Wireless Controller

CVSS Score

0.0

EPSS Score

0.2%

EPSS Percentile

8th

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.

CWE	CWE-79
Vendor	watchguard
Product	fireware os
Published	Dec 4, 2025
Last Updated	Aug 10, 2026

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Affected Versions

WatchGuard / Fireware OS

2025.1 < 2025.1.3 12.0 < 12.11.5 11.7.2 ≤ 11.12.4+541730

WatchGuard / Fireware OS

12.0 < 12.5.14

References

NVD ↗ CVE.org ↗ EPSS Data ↗

psirt.watchguard.com: https://psirt.watchguard.com/CVE-2025-13939 watchguard.com: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00024

Credits

https://www.linkedin.com/in/simonepaganessi