CVE-2025-4804 WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Hotpot Configuration
An authenticated administrator can inject malicious scripts into the spamBlocker module, potentially leading to code execution or account takeover on WatchGuard Firebox devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-4804?
CVE-2025-4804 is a medium-severity cross-site scripting vulnerability in WatchGuard Fireware OS, published on 16 May 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the spamBlocker module. This vulnerability requires an authenticated administrator session to a locally managed Firebox.
Weakness: CWE-79
Which versions are affected by CVE-2025-4804?
How do I fix CVE-2025-4804?
No fix has been published for CVE-2025-4804 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-4804 being exploited?
There is no known exploitation of CVE-2025-4804 in the wild and no public exploit code.
Sources
Also known as GHSA-2fv9-xg6h-6625.