There was a security update in November : <a href="http:&#x2F;&#x2F;www.androidcentral.com&#x2F;androids-november-security-patch-live" rel="nofollow">http:&#x2F;&#x2F;www.androidcentral.com&#x2F;androids-november-security-pat...</a><p>And from that link:<p>&gt; Google also states the &quot;most severe of these issues is a Critical security vulnerability that could enable remote code execution on an affected device through multiple methods such as email, web browsing, and MMS when processing media files,&quot;<p>Sounds pretty relevant and severe to me.