CVE-2015-6386
The passthrough FTP feature on Cisco Web Security Appliance (WSA) devices with software 8.0.7-142 and 8.5.1-021 allows remote attackers to cause a denial of service (CPU consumption) via FTP sessions in which the control connection is ended after data transfer, aka Bug ID CSCut94150.
Date published : 2015-12-01
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151130-wsa