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Status published
Medium
CVE-2025-6999
WatchGuard Firebox Authentication Portal Request Smuggling Vulnerability
Vulnerability Description
An HTTP Request Smuggling [CWE-444] vulnerability in the Authentication portal of WatchGuard Fireware OS allows a remote attacker to evade request parameter sanitation and perform a reflected self-Cross-Site Scripting (XSS) attack.This issue affects Fireware OS: from 12.0 through 12.11.2.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
WatchGuard
View all reports →Affected Software
Fireware OS
Vulnerable Versions:
12.0
Timeline
Official Publish:
September 15th, 2025
Last Modified:
September 16th, 2025
Added to House:
July 22nd, 2026