This article documents how to upgrade the .NET 3.1.x and ASP.NET 3.1.x runtime to the latest version when using Veeam ONE 12 GA (build 220.127.116.118) or lower. For a list of all versions and build numbers of Veeam ONE, refer to: KB4357
Veeam ONE versions 12 GA (build 18.104.22.1688) or lower utilized .NET and ASP.NET 3.1.x runtime components for multiple purposes (e.g., Reporting, Web Services, and more).
The December 2022 Microsoft Security Updates comes with a remote code execution vulnerability fix for NET Core 3.1, .NET 6.0, and .NET 7.0. Those packages should be updated to maintain security.