CVE-2025-6946 WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in IPS Configuration

What is CVE-2025-6946?

CVE-2025-6946 is a medium-severity cross-site scripting vulnerability in Watchguard Fireware, published on 4 Dec 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

A stored cross-site scripting (XSS) vulnerability exists in the management interface of WatchGuard Firebox appliances via the IPS configuration. An authenticated remote attacker with administrator privileges could exploit this vulnerability to execute arbitrary JavaScript code in the Firebox management ninterface of another management user.

Weakness: CWE-79

Which versions are affected by CVE-2025-6946?

It affects 1 product.

Products include Watchguard Fireware.

How do I fix CVE-2025-6946?

No fix has been published for CVE-2025-6946 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-2025-6946 being exploited?

There is no known exploitation of CVE-2025-6946 in the wild and no public exploit code.

Other vulnerabilities in Watchguard Fireware

• CVE-2022-26318 WatchGuard Firebox and XTM Appliances Arbitrary Code Execution Exploited Critical 9.8
• CVE-2025-14733 WatchGuard Firebox Out of Bounds Write Exploited Critical 9.3
• CVE-2025-9242 WatchGuard Firebox Out-of-Bounds Write Exploited Critical 9.3
• CVE-2022-23176 WatchGuard Firebox and XTM Privilege Escalation Exploited High 8.8
• CVE-2022-31789 Integer overflow in n/a Critical 9.8

All Watchguard Fireware vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rg89-p3mq-2mpq.