WUA

 $Updates = @()
   $Session = New-Object -ComObject Microsoft.Update.Session
   $UpdateServiceManager = New-Object -ComObject Microsoft.Update.ServiceManager
   $UpdateService = $UpdateServiceManager.AddScanPackageService("Offline Sync Service", "C:\Users\Vadim\Downloads\wsusscn2.cab", 1)
   $Searcher = $Session.CreateUpdateSearcher()
   $Searcher.ServerSelection = 3
   $Searcher.ServiceID = [string]$UpdateService.ServiceID
    $updates = $Searcher.Search("IsInstalled=0  and IsHidden=0")
    foreach ($update in $updates.Updates) {
    Write-Host $update.Title
    }