CVE-2025-1239

MEDIUM

WatchGuard Fireware OS 12.0-12.5.12+701324 12.6-12.11 - Authenticated Stored Cross-Site Scripting via Blocked Sites List

Title source: llm

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the Blocked Sites list. This vulnerability requires an authenticated administrator session to a locally managed Firebox.This issue affects Fireware OS: from 12.0 through 12.5.12+701324, from 12.6 through 12.11.

References (1)

Core 1

Core References

Vendor Advisory

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00002

Scores

CVSS v4 4.8

EPSS 0.0040

EPSS Percentile 32.5%

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (2)

WatchGuard/Fireware OS 12.0 - 12.5.12+701324

WatchGuard/Fireware OS 12.6 - 12.11

Published Feb 14, 2025

Tracked Since Feb 18, 2026