Buffer overflow in the Cisco WebEx Recording Format (WRF) player T27 before LD SP32 EP10 and T28 before T28.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted WRF file, aka Bug ID CSCua61331.
http://www.securitytracker.com/id?1027639
http://www.securityfocus.com/bid/55866
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20121010-webex