https://christoph.vollmann.co/2016/11/aktuelles-patch-level-ermitteln/

GetCurrentPatchlevel.ps1

param(
    [string]$BuildVersion = ""
)
#Patch-Level der SharePoint Farm prüfen
$apiUrl = "https://sharepointupdates.com/api/articles/"

if ($BuildVersion -eq "") {
    write-host "Lese Farm-Info..." -f Gray
    asnp *share*
    $BuildVersion = (Get-SPFarm).BuildVersion.ToString()
    write-host "Version $BuildVersion ermittelt"
}

$versionUrl = $apiUrl + $BuildVersion

write-host "Frage sharepointupdates.com ab ($versionUrl)..." -f Gray
$versionInfo = Invoke-RestMethod -Uri $versionUrl

foreach ($info in $versionInfo) {
    write-host "-" $info.Title -f Green

    if ($info.KnownIssues.Count -gt 0) {
        write-host "Es exisistieren bekannte Fehler!" -f y
        write-host $versionInfo.KnownIssues
    }
}