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. This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.
History

Tue, 03 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Mar 2026 13:45:00 +0000

Type Values Removed Values Added
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. This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.
Title WatchGuard Firebox Reflected Cross-Site-Scripting (XSS) Vulnerability in Fireware Web UI
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-79
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:12.7
cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:2025.1
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 5.1, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published:

Updated: 2026-03-03T14:45:43.348Z

Reserved: 2026-02-27T15:37:10.115Z

Link: CVE-2026-3343

cve-icon Vulnrichment

Updated: 2026-03-03T14:45:31.213Z

cve-icon NVD

Status : Received

Published: 2026-03-03T14:15:57.687

Modified: 2026-03-03T14:15:57.687

Link: CVE-2026-3343

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.