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.
References (2)
Core 2
Core References
Vendor Advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0004
Vendor Advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00004
Scores
CVSS v3
6.1
EPSS
0.0020
EPSS Percentile
9.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
watchguard/fireware
12.7 - 12.11.8
Published
Mar 03, 2026
Tracked Since
Mar 03, 2026