This indicates an attack attempt against a memory-corruption vulnerability in Adobe products.
This issue is caused by an error in "authplay.dll" when it handles a malicious Flash or PDF file. It may allow remote attackers to execute arbitrary code by sending a crafted Flash or PDF file.
Adobe Flash Player version 10.1.85.3 and prior
Adobe Flash Player version 10.1.95.2 and prior
Adobe Reader versions 9.0 through 9.4
Adobe Acrobat versions 9.0 through 9.4
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the patch, available from the vendor's website: