Adobe Flash Player 18.x through 18.0.0.252 and 19.x through 19.0.0.207 on Windows and OS X and 11.x through 11.2.202.535 on Linux allows remote attackers to execute arbitrary code via a crafted SWF file, as exploited in the wild in October 2015.
https://www.exploit-db.com/exploits/38490/
https://security.gentoo.org/glsa/201511-02
http://rhn.redhat.com/errata/RHSA-2015-2024.html
http://rhn.redhat.com/errata/RHSA-2015-1913.html
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00015.html