Apple has released updates for pretty much every single one of its platforms, excluding tvOS. macOS 13.5.2, iOS 16.6.1, iPadOS 16.6.1, and watchOS 9.6.2 contain bug fixes that have been unspecified as well as security vulnerabilities that have also been addressed.
For example, within iOS, macOS and iPadOS there was a vulnerability which could allow a hacker to gain access to the operating system with a maliciously crafted image. Apple has fixed the ImageIO process with the operating systems by addressing an issue with buffer overflow.
Within iOS, iPadOS and watchOS, a maliciously crafted attachment in the Wallet app could lead to arbitrary code execution.
Apple has recommended for everyone to update to macOS 13.5.2, iOS 16.6.1, iPadOS 16.6.1, and watchOS 9.6.2 as soon as possible.