Cisco disclosed a DoS vulnerability affecting the IOS software running on industrial switches belonging to the Industrial Ethernet 2000 Series. The flaw affects the way the devices processes Cisco Discovery Protocol (CDP) packets. An unauthenticated attacker with access to the network can send specially crafted CDP packets to the Cisco Industrial Switches to cause vulnerable devices to reload. Cisco has yet to release a patch to solve the issue and there are no workarounds, fortunately, the vulnerability hasnt been exploited in the wild.”]
Source: https://securityaffairs.co/wordpress/44539/hacking/cisco-industrial-switches-flaw.html