Apple published security updates and bulletins for six products such as Xcode 9, tvOS 11, watchOS 4, Safari 11, iOS 11, and iTunes 12.7. The most important of all the security patches is the one delivered with the recently launched iOS 11. Apple will release macOS High Sierra (10.13) on September 25, and the company is expected to bundle any security patches with the main 10.13 release. There are no macOS security updates for the main release of 10.11.6 and 10.12.6.
Source: https://www.bleepingcomputer.com/news/apple/apple-issues-security-updates-for-ios-itunes-xcode-others/