CVE-2025-14265

Critical

Published: 11/12/2025(UTC)Translated: 05/08/2026(UTC)NVD NIST

Summary

In ScreenConnect versions prior to 25.8, server-side validation and integrity checks within the extension subsystem could allow the installation and execution of untrusted or arbitrary extensions by authorized or administrative users. Abuse of this behavior could result in the execution of custom code on the server or unauthorized access to application configuration data. This issue affects only the ScreenConnect server component; host and guest clients are not impacted.

Risk Assessment

The risk includes server takeover by a privileged user, potentially leading to confidentiality breaches of configuration data and system integrity.

Recommendation

Immediately upgrade ScreenConnect to version 25.8 or later, which introduces enhanced server-side configuration handling and integrity checks.

Original NVD description (English source)

In versions of ScreenConnect™ prior to 25.8, server-side validation and integrity checks within the extension subsystem could allow the installation and execution of untrusted or arbitrary extensions by authorized or administrative users. Abuse of this behavior could result in the execution of custom code on the server or unauthorized access to application configuration data. This issue affects only the ScreenConnect server component; host and guest clients are not impacted. ScreenConnect 25.8 introduces enhanced server-side configuration handling and integrity checks to ensure only trusted extensions can be installed.