This indicates an attack attempt to exploit a Memory Leakage vulnerability in Adobe Flash Player.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted SWF file. An attacker can exploit this by tricking an unsuspecting user into visiting a malicious webpage, and bypass ASLR protection mechanism on the targeted user's system to perform other attacks.
Adobe Flash Player 126.96.36.199 and earlier versions
Adobe Flash Player 188.8.131.52 and earlier 13.x versions
Adobe Flash Player 184.108.40.2060 and earlier versions for Linux
Adobe AIR desktop runtime 220.127.116.11 and earlier versions
Adobe AIR SDK 18.104.22.168 and earlier versions
Adobe AIR SDK & Compiler 22.214.171.124 and earlier versions
Adobe AIR 126.96.36.199 and earlier versions for Android
Security Bypass: Remote attackers can bypass security checks of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.