This indicates an attack attempt to exploit a Memory Corruption vulnerability in Cisco WebEx Recording Format (WRF) Player.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted WRF file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted WRF file.
Cisco Systems WebEx Player T27LD Prior To 3.29.3210
Cisco Systems WebEx Player T28L Prior To 188.8.131.5253
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.