Home

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.

PUBLISHED Reserved 2026-02-27 | Published 2026-03-03 | Updated 2026-03-03 | Assigner WatchGuard




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Product status

Default status
unaffected

12.7 (semver)
affected

2025.1 (semver)
affected

Credits

btaol finder

References

www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0004

cve.org (CVE-2026-3343)

nvd.nist.gov (CVE-2026-3343)

Download JSON