CVE-2019-25427 Comodo Dome Firewall 2.7.0 Reflected Cross-Site Scripting via antispyware

Medium 5.1 Published 19 Feb 2026 Updated 24 May 2026

Attackers can inject malicious scripts into the firewall's antispyware interface, allowing arbitrary code execution in users' 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-2019-25427?

CVE-2019-25427 is a medium-severity cross-site scripting vulnerability in Comodo Dome Firewall, published on 19 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

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the antispyware endpoint. Attackers can send POST requests with JavaScript payloads in the DNSMASQ_WHITELIST or DNSMASQ_BLACKLIST parameters to execute arbitrary code in users' browsers.

Weakness: CWE-79

Which versions are affected by CVE-2019-25427?

It affects 1 product.

Products include Comodo Dome Firewall.

How do I fix CVE-2019-25427?

No fix has been published for CVE-2019-25427 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-2019-25427 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25427 exists.

Sources

Also known as GHSA-7g54-j55c-px94.