Apple iOS before 9.0.2 does not properly restrict the options available on the lock screen, which allows physically proximate attackers to read contact data or view photos via unspecified vectors.
https://support.apple.com/HT205284
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-5869
http://www.securitytracker.com/id/1033687
http://lists.apple.com/archives/security-announce/2015/Sep/msg00006.html