Today, we are releasing the .NET October 2021 Updates. These updates contains reliability and other improvements. See the individual release notes for details on updated packages.
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. An Information Disclosure vulnerability exists in .NET where System.DirectoryServices.Protocols.LdapConnection may send credentials in plain text on Linux.