Some methods of attacking a Cisco router do not require knowledge of the IOS version,so software patching is recommended.

Question

Quizplus · Accepted Answer

Some attacks may exploit vulnerabilities in the hardware or other components of the router that are not related to the IOS version, so patching the software is still recommended. Additionally, patching the IOS can also fix known vulnerabilities that can be exploited by attackers who do know the version in use.

Some Methods of Attacking a Cisco Router Do Not Require