The story of .NET security does not end with Framework 4.8. Microsoft has shifted its security model aggressively to and Bounty Programs .
However, in modern enterprise networks, this specific vulnerability alert is one of the most common in application security testing. To safeguard your infrastructure effectively, you must understand what this version string actually represents, differentiate between a superficial scanner warning and a genuine security risk, and know how to mitigate the actual underlying vulnerabilities. The CLR vs. Framework Version Misunderstanding
6.5 (Medium) Vector: Elevation of Privilege