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

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-03-31 · updated 2026-06-17
Weakness: CWE-79

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.

Affected products

GFI KerioConnect: 10.0.6

References

https://github.com/0xs1ash/poc/blob/main/xss.md#1-stored-xss
https://vuldb.com/?ctiid.302027
https://vuldb.com/?id.302027
https://vuldb.com/?submit.523009

Get alerted when CVE-2025-2975 or the next vulnerability affects your stack