Cisco Auditing Tool

The Cisco Auditing Tool (CAT) is designed to scan Cisco routers for common vulnerabilities. It is particularly useful for security professionals assessing the security posture of Cisco network devices by attempting password-based authentication and identifying exploitable weaknesses.

Use cases include penetration testing of Cisco infrastructure, routine vulnerability assessments in enterprise networks, and auditing configurations for weak passwords or default settings. The tool targets standard Cisco services like Telnet on port 23, making it suitable for quick checks during red team engagements.

As a lightweight Perl script, it relies on dictionary attacks for password guessing, providing output on invalid attempts to guide further investigation.

The tool connects to a specified host and port, typically Telnet (port 23), and performs brute-force password guessing using a provided dictionary file. It sequentially tests passwords, reporting invalid attempts, and scans for common Cisco vulnerabilities through protocol interactions. Implemented as a Perl script, it leverages standard networking protocols to probe router responses.