CVE-2019-25392 Smoothwall Express 3.1 'iptools.cgi' Cross-Site Scripting

Medium 5.1 Published 16 Feb 2026 Updated 5 Mar 2026

Unauthenticated attackers can inject malicious scripts via the IP parameter in iptools.cgi, executing arbitrary JavaScript in victim browsers.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-25392?

CVE-2019-25392 is a medium-severity cross-site scripting vulnerability in Smoothwall Express, published on 16 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating the IP parameter. Attackers can send POST requests to the iptools.cgi endpoint with script payloads in the IP parameter to execute arbitrary JavaScript in victim browsers.

Weakness: CWE-79

Which versions are affected by CVE-2019-25392?

It affects 1 product.

Products include Smoothwall Smoothwall Express.

How do I fix CVE-2019-25392?

No fix has been published for CVE-2019-25392 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-2019-25392 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25392 exists.

Sources

Also known as GHSA-vxq8-hcg5-56j6.