This indicates an attack attempt against a buffer-overflow vulnerability in Realtek Media Player.
The vulnerability is caused by an error when the vulnerable software handles a crafted playlist. It allows a remote attacker to execute arbitrary code via sending a crafted .PLA file.
Realtek Media Player(RtlRack) A4.06
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently, we are not aware of any vendor supplied patch for this issue.
Do not open untrusted playlist (".pla") files.