CVE-2025-1239

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Blocked Sites List

Severity Score

4.8

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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.

*Credits: Simone Paganessi (https://www.linkedin.com/in/simonepaganessi)

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

High

User Interaction

Passive

System

Vulnerable | Subsequent

Confidentiality

None

Low

Integrity

None

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-02-11 CVE Reserved
2025-02-14 CVE Published
2025-02-14 CVE Updated
2025-02-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

CAPEC-592: Stored XSS

References (1)

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

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
WatchGuard Search vendor "WatchGuard"		Fireware OS Search vendor "WatchGuard" for product "Fireware OS"				>= 12.0.0 <= 12.5.12+701324 Search vendor "WatchGuard" for product "Fireware OS" and version " >= 12.0.0 <= 12.5.12+701324"		en		Affected
WatchGuard Search vendor "WatchGuard"		Fireware OS Search vendor "WatchGuard" for product "Fireware OS"				>= 12.6 <= 12.11 Search vendor "WatchGuard" for product "Fireware OS" and version " >= 12.6 <= 12.11"		en		Affected