About Apple security updates
For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
Apple Support 2.4 for iOS
Released September 17, 2018
Available for: iOS 11.0 and later
Impact: An attacker in a privileged network position may be able to intercept analytics data sent to Apple
Description: Analytics data was sent using HTTP rather than HTTPS. This was addressed by sending analytics data using HTTPS.
CVE-2018-4397: Yiğit Can YILMAZ (@yilmazcanyigit)