Connectwise: >> Screenconnect >> 25.4.20 Security Vulnerabilities
CVE-2026-84869
A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host confirmation in certain circumstances. ScreenConnect servers are not impacted.
Known exploited
CVSS Score
9.9
EPSS Score
0.009
Published
2026-09-08
In ScreenConnect™ versions prior to 26.2, input
validation within the Host Pass creation functionality could allow an
authenticated user with Host Pass creation privileges the ability to specify a
token expiration duration beyond the intended maximum when generating delegated
access tokens.
CVSS Score
4.7
EPSS Score
0.002
Published
2026-06-10
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.
CVSS Score
9.1
EPSS Score
0.004
Published
2025-12-11