Last updated May 2, 2022
Apple released patches for two zero-day vulnerabilities last Thursday, March 31, 2022. These exploits impact macOS 12.3 and iOS 15.4. At the time of writing, both updates were listed as “reserved” with very little information available.
There are unconfirmed reports of these zero-days being actively exploited. When zero-day patches are released with very little confirmed information, it often means the security impact is significant. We highly recommend that you update to macOS 12.3.1 and iOS 15.4.1 as soon as possible.