The remote mobile host is running a version of Apple iOS that is missing an update related to the security of data in transit.
According to its banner, the remote Apple iOS device is missing a security update. Versions of Apple iOS 6.x prior to 6.1.6, or 7.x prior to 7.0.6 are missing an update that restores missing validation steps when conducting a SSL/TLS session. This error could allow an attacker to spoof a server and modify or view sensitive information between it and the iOS device.
Upgrade to iOS version 7.0.6 or later. If 7.x cannot be obtained for your mobile device, 6.1.6 is also patched for these vulnerabilities.