In short, a Security Advisory is a type of publication issued by Cisco about specific vulnerabilities, while PSIRT is the team that manages these advisories and the overall response to product security incidents. On the other hand, a Field Notice is ...

Well, this should be interesting. Let's see if we can try and figure out what it could be. I will have to do some digging, but I have folks I can reach out to if need be.   Would you be able to provide (and sanitize if need be) the following outputs?...

Doesn't make sense that you are locked out of the device unless a process got stuck or you wrote the script incorrectly.   Try and access the device via console like Balaji said if Telnet/SSH is not working for you. Maybe you set the script to disabl...