MacOS Big Sur 11.3.1 Released, Fixes WebKit Vulnerabilities

Apple’s release notes for the MacOS 11.3.1 update:

Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Update: There are now updates for iOS (14.5.1 and 12.5.3) and WatchOS (7.4.1) that fix the same WebKit vulnerabilities.

★ Monday, 3 May 2021