.net Framework 1.1.4322 Jun 2026

The .NET Framework 1.1.4322 contains several known, unpatched vulnerabilities because Microsoft ended extended support for .NET 1.1 on . If you run this version on a network-connected machine, you are exposing your organization to risks like deserialization attacks and privilege escalation exploits that have been fixed in later frameworks.

Locate the source code for the application requiring v1.1.4322 . If the source is lost, use a deobfuscator like dnSpy on the EXE. Then, start your migration tomorrow. Your security team will thank you. .net framework 1.1.4322

is the specific build number of the .NET Framework 1.1 Service Pack 1 (SP1) . To break it down: If the source is lost, use a deobfuscator

It introduced built-in support for ASP.NET Mobile Controls , allowing developers to build web applications for mobile devices like PDAs and early smartphones. is the specific build number of the

If you see v1.1.4322 listed, it is present.

When developers checked the properties of mscorlib.dll or system.dll in the C:\Windows\Microsoft.NET\Framework\v1.1.4322 directory, they saw this number.