CVE-2025-13936: WatchGuard Fireware

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Tigerpaw Technology Integration module) allows Stored XSS.

Affected products

• WatchGuard Fireware: from 2025.1, before 2025.1.3 (fixed in 2025.1.3); from 12.0.0, before 12.11.5 (fixed in 12.11.5); from 12.5, before 12.5.14 (fixed in 12.5.14)

Published 2025-12-04. Last modified 2026-09-25.