According to a report from AppleInsider, they have been told by their sources at Apple that the company has managed to patch the exploit for the vulnerability in the previous release of betas for iOS, tvOS, watchOS, and macOS. This means that Apple has already addressed the issue and that when the main release for the software is available, all users should probably update to it to keep themselves protected.
However it seems that for hardware devices like Time Machine, AirPort Extreme, and AirPort Express does not have a patch available, and AppleInsider’s sources are unclear if there might be one in the works. If you recall, last year there were reports that Apple was apparently getting out of the router business, so that might explain it, although we hope that Apple will at least offer patches for existing customers for this particular flaw.
Note that Apple has yet to officially confirm if the vulnerability has truly been patched so take it with a grain of salt for now, but given how fast we’re seeing companies such as Microsoft have responded, we wouldn’t be surprised if Apple didn’t already have a solution.