CVE-2026-84869: ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability

Critical severity, CVSS 9.9. Actively exploited: in CISA KEV since 2026-09-11. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• ConnectWise ScreenConnect: before 26.6.5.9742 (fixed in 26.6.5.9742)

Published 2026-09-08. Last modified 2026-09-12.