By making an emergency call and holding down the power button on an iPhone twice, users can gain access to the device s phone feature, view and edit contacts, check voicemail and look through photos, according to reports today. Researchers around this time last year found a problem (CVE-2012-0644) with iOS 5’s missed call notification. Apple confirmed the vulnerability and directed us to a statement made by a company spokeswoman Trudy Muller. We are aware of this issue, and will deliver a fix in a future software update
Source: https://threatpost.com/new-ios-61-flaw-allows-access-iphones-contacts-photos-021413/77533/