Five new Cisco-manufactured network equipments have been found vulnerable to five new security vulnerabilities that could allow hackers to take complete control over them. Four of the five high-severity bugs are remote code execution issues affecting Cisco routers, switches, and IP cameras, while the fifth vulnerability is a denial-of-service issue affecting Cisco IP phones. The reported vulnerabilities reside in the various implementations of the Cisco Discovery Protocol (CDP) that comes enabled by default on virtually all Cisco devices and can not be turned OFF.
Source: https://thehackernews.com/2020/02/cisco-cdp-vulnerabilities.html