I just took delivery of an old Cisco 1720 router with version 12.1(19) and I'm wondering if there are any known vulnerabilities for this IOS. I know Cisco will release for free replacement versions when there is a problem and I used to try to keep up with the announcements and save the links, etc. Is there a place on the Cisco website (I have CCO login) to look up version and request the replacement?
Many thanks