I don't see a thread here about this vulerability in Win11 (and 10 too) so, waiting Microsoft solve this issue, there is a workaround
Workaround for Windows 10 and 11 HiveNightmare Windows Elevation of Privilege Vulnerability - gHacks Tech News
Here is a workaround for the HiveNightmare elevation of privilege vulnerability affecting Windows 10 versions 1809 and newer, Windows 11, and Windows Server.
- Windows 11 Home
- Computer type
- Huawei Matebook D 14" 2018
- AMD Ryzen 5 2500U