Apple has just released its regular weekly update to XProtect for all versions of macOS, bringing it to version 5356. As usual it doesn’t release information about what security issues this update might address.

This version makes one minor amendment to the Yara rule for MACOS.BUNDLORE.KUDU.3, and there are no changes to its Osascript rules in XPScripts.yr.

You can check whether this update has been installed by opening System Information via About This Mac, and selecting the Installations item under Software.

A full listing of security data file versions is given by SilentKnight and SystHist for El Capitan to Golden Gate available from their product page. If your Mac hasn’t yet installed this update, you can force it using SilentKnight or at the command line.

If you want to install this as a named update in SilentKnight, its label is XProtectPlistConfigData_10_15-5356

Sequoia, Tahoe and Golden Gate systems only

This update has now been released for Sequoia and later via iCloud. If you want to check it manually, use the Terminal command
sudo xprotect check
then enter your admin password (this still results in an error in macOS 27, though). If that returns version 5356 but your Mac still reports an older version is installed, you should be able to force the update using
sudo xprotect update
which should work fine for Golden Gate as well.