Cisco Secure Email Gateway, Secure Email, AsyncOS Software, and Web Manager appliances contains an improper input validation vulnerability that allows threat ac…

A critical improper input validation vulnerability (CVE-2025-20393) affects multiple Cisco products including Secure Email Gateway, Secure Email, AsyncOS Software, and Web Manager appliances. The vulnerability allows threat actors to execute arbitrary commands with root privileges on the underlying operating system of affected appliances. This represents a high-severity security risk requiring immediate attention and mitigation according to Cisco's guidelines.