CVE-2025-2975 GFI KerioConnect Signature EditHtmlSource cross site scripting

Medium 5.1 Published 31 Mar 2025 Updated 31 Mar 2025

Remote attackers can inject malicious scripts via the signature editor, potentially compromising user sessions or executing code.

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

What is CVE-2025-2975?

CVE-2025-2975 is a medium-severity cross-site scripting vulnerability in GFI KerioConnect, published on 31 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability was found in GFI KerioConnect 10.0.6 and classified as problematic. This issue affects some unknown processing of the file Settings/Email/Signature/EditHtmlSource of the component Signature Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2025-2975?

It affects 1 product.

Products include Gfi Kerio Connect.

How do I fix CVE-2025-2975?

No fix has been published for CVE-2025-2975 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-2025-2975 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2975 exists.

Sources

Also known as GHSA-gc8p-c387-qwq8.