CVE-2025-4804Network attack vector

Stored XSS via unsanitized hotspot configuration

Published May 16, 2025 · Updated Aug 8, 2026

Stored XSS in Fireware OS 12.0 through 12.11.1 allows remote authenticated users to execute scripts through hotspot configuration. The management Web UI stores hotspot configuration content and later renders it in a browser, but WatchGuard has not identified the affected field or escaping failure. A locally managed Firebox and an authenticated administrator session are required, and passive user interaction exposes the viewing browser to script execution.

CVSS severity4.8
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Fireware OS 12.0 through 12.11.1 allows remote authenticated users to execute scripts through hotspot configuration. The management Web UI stores hotspot configuration content and later renders it in a browser, but WatchGuard has not identified the affected field or escaping failure. A locally managed Firebox and an authenticated administrator session are required, and passive user interaction exposes the viewing browser to script execution.

The record

CVE
CVE-2025-4804
Published
May 16, 2025
Updated
Aug 8, 2026
Vendor
WatchGuard Technologies, Inc.
Product
Fireware OS
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.0 <12.11.2
  2. Affected versionversion=12.5 <12.5.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

WatchGuard Technologies, Inc. · Fireware OSversion=12.0 <12.11.2; version=12.5 <12.5.13

Published CVSS scores

4.8WatchGuard Technologies, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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