It was an evening full of updates. Yesterday, in addition to new versions of iOS, iPadOS, tvOS, watchOS and HomePod, Apple also released an additional macOS Catalina 10.15.5 update for all users.
According to the version information, the macOS Catalina 10.15.5 update patch introduces important security updates and is recommended for installation by all users.
You can find detailed information about the content of this security update on the website Apple.
Most likely, Apple has fixed the same vulnerability that Un0ver developers used to create a jailbreak. You can upgrade by going to System Preferences – Updates.