This indicates an attack attempt to exploit an Integer Overflow vulnerability in Cisco WebEx.
The vulnerability is due to an input validation 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 T27LC Prior To 3.23.2511
Cisco Systems WebEx Player T27LD Prior To 3.29.3202
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply patch available from the website.