One in two Android devices that installed Duos X-Ray mobile vulnerability assessment software found known, unpatched vulnerabilities on the phone that could be used to take full control of users phones CTO Jon Oberhide said that carriers conservative approach to rolling out patches to fix Android vulnerabilities is a big part of the problem. Duo says vulnerabilities on Android devices are a serious security problem and that vulnerable devices often remain vulnerable for months and even years”]
Source: https://nakedsecurity.sophos.com/2012/09/17/android-unpatched-security-holes/