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Published on Feb 5, 2020
Armis has discovered five critical, zero-day vulnerabilities in various implementations of the Cisco Discovery Protocol (CDP) that can allow remote attackers to completely take over devices without any user interaction. CDP is a Cisco proprietary Layer 2 (Data Link Layer) network protocol that is used to discover information about locally attached Cisco equipment. CDP is implemented in virtually all Cisco products including switches, routers, IP phones and cameras. All those devices ship from the factory with CDP enabled by default. For more information, please visit https://armis.com/cdpwn.