HAFNIUM | Verify KB5000871 is InstalledExploit: HAFNIUM
PATCH: KB5000871
SHORT:
Get-WinEvent -LogName System | where{$_.message -match "KB5000871"} | select -First 3
LONG:
Get-WinEvent -LogName System | where{$_.message -match "KB5000871"} | select -First 3 |fl
For me, the following had null results:
get-hotfix | findstr /i KB5000871
or
Get-WinEvent -LogName Setup | where{$_.message -match "KB5000871"}