Flash 18.0.0.203 is vulnerable: https://helpx.adobe.com/security/products/flash-player/apsa15-04.html http://malware.dontneedcoffee.com/2015/07/cve-2015-5122-hackingteam-0d-two-flash.html Firefox will block it by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1182751 Update ASAP.