AOS must enforce a minimum 15-character password length.

Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password.

The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Use of more characters in a password helps to exponentially increase the time and/or resources required to compromise the password.

Verify the AOS configuration with the following command: show aaa password-policy mgmt

If "Minimum password length required" is not set to "15 characters", this is a finding.

Configure AOS with the following commands: configure terminal aaa password-policy mgmt password-min-length 15 exit write memory