CVE-2026-3564: Critical ScreenConnect Flaw Enables Session Hijacking Through ASP.NET Machine Key Abuse
ConnectWise has released an emergency patch for a critical vulnerability (CVE-2026-3564) in its ScreenConnect remote access platform that could allow unauthenticated attackers to hijack legitimate sessions by forging authentication credentials using extracted ASP.NET machine keys. Understanding the Vulnerability The flaw affects all versions of ScreenConnect before version 26.1 and stems from improper verification of cryptographic…
