This indicates an attack attempt against a buffer-overflow vulnerability in Adobe ShockWave Player.
The vulnerability is caused by an error when the vulnerable ActiveX control handles a malformed value for the "PlayerVersion" property. It allows a remote attacker to execute arbitrary code via sending a crafted web page.
Adobe ShockWave Player 184.108.40.2061
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are not aware of any patches supplied by the vendor.