This indicates an attack attempt against an Information Disclosure vulnerability in Adobe Flash Player.
The vulnerability is caused by an error when the vulnerable software handles maliciously crafted SWF files. A remote attacker can exploit this to gain unauthorized access to sensitive information.
Adobe Flash Player 184.108.40.206 and earlier versions
Adobe Flash Player 220.127.116.119 and earlier 13.x versions
Adobe Flash Player 18.104.22.1685 and earlier versions for Linux
Adobe AIR desktop runtime 22.214.171.1246 and earlier versions
Adobe AIR SDK 126.96.36.1996 and earlier versions
Adobe AIR SDK and Compiler 188.8.131.526 and earlier versions
Adobe AIR for Android 184.108.40.2066 and earlier versions
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.