CVE-2026-3343

Medium

Open

TLP:CLEAR

WatchGuard Firebox Reflected Cross-Site-Scripting (XSS) Vulnerability in Fireware Web UI

NVD CVE.org

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Description

A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.

Details

CVSS Score: 5.1
EPSS Score ⓘ: 0.21%

10.8th percentile
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence: 90%
Published: Mar 3, 2026
Last Modified: Aug 10, 2026

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