Apple has just released an out-of-cycle update to XProtect for macOS Sequoia and Tahoe only, bringing it to version 5337. As usual it doesn’t release information about what security issues this update might address.

This version removes the Yara rule for MACOS.SOMA.MAENB, and makes no changes to the 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 Tahoe available from their product page.

Currently this update is only available for Macs running Sequoia or Tahoe. Those running earlier versions of macOS can only update to XProtect version 5336 via softwareupdate.

This update has only been released for Sequoia and Tahoe via iCloud. If you want to check it manually, use the Terminal command
sudo xprotect check
then enter your admin password. If that returns version 5337 but your Mac still reports an older version is installed, you should be able to force the update using
sudo xprotect update