secfilter in the Samsung kernel for Android on SM-N9005 build N9005XXUGBOB6 (Note 3) and SM-G920F build G920FXXU2COH2 (Galaxy S6) devices allows attackers to bypass URL filtering by inserting an "exceptional URL" in the query string, as demonstrated by the http://should-have-been-filtered.example.com/?http://google.com URL.