Affected: Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5 AND 4.8, Microsoft .NET Framework 3.5 AND 4.7.2, Microsoft .NET Framework 2.0 Service Pack 2, Microsoft .NET Framework 3.5.1

A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system. To exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application. The security update addresses the vulnerability by correcting how .NET Framework processes input.