PT-2025-21756 · Watchguard · Watchguard Fireware

Published 2025-05-16 · Updated 2025-05-17 · CVE-2025-4804

Positive Technologies (AI Summary)

CVSS v4.0

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: WatchGuard Fireware OS versions 12.0 through 12.1.1 is incorrect, the correct range is: WatchGuard Fireware OS versions 12.0 through 12.11.1

Description: The issue is related to an Improper Neutralization of Input During Web Page Generation, also known as Cross-site Scripting (XSS). This allows for Stored XSS via the spamBlocker module. It requires an authenticated administrator session to a locally managed Firebox.

Recommendations: For WatchGuard Fireware OS versions 12.0 through 12.11.1, update to a version that contains a fix for this issue. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-4804

Affected Products

Watchguard Fireware

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2025-4804 · Security Note
• https://watchguard.com/wgrd-psirt/advisory/wgsa-2025-00006 · Note
• https://t.me/cvetracker/24069 · Telegram Post
• https://twitter.com/CVEnew/status/1923600390278287853 · Twitter Post