firefox is vulnerable to arbitrary code execution. The vulnerability exists through WebGL content.
lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html
www.debian.org/security/2016/dsa-3600
www.mozilla.org/security/announce/2016/mfsa2016-56.html
www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
www.securityfocus.com/bid/91075
www.securitytracker.com/id/1036057
www.ubuntu.com/usn/USN-2993-1
access.redhat.com/errata/RHSA-2016:1217
access.redhat.com/security/updates/classification/#critical
bugzilla.mozilla.org/show_bug.cgi?id=1223810
www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#firefoxesr45.2