Affected: Cisco Firepower Threat Defense Software, Cisco Umbrella Insights Virtual Appliance, Cisco Cyber Vision, Cisco UTD SNORT IPS Engine Software

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.