I want to know the status of remote, code executing vulnerabilities of old Windows operating systems that are left unfixed, if they exist at all. Exploits like EternalBlue or BlueKeep wreaked havoc on many systems, but Microsoft did issue a patch even for Windows versions that are past EOL. Seeing that I wonder what the status of older operating systems is. Like Windows 3.1 or Windows 95, are they wormable even with all updates applied?
Edit: I was actually looking for public, documented vulnerabilities.