Cisco is warning users that a security vulnerability found in a number of its carrier-grade routers is actively being exploited in the wild by cybercriminals.

The vulnerability, tracked as CVE-2020-3118, affects the company’s ASR 9000 series routers, iOS XRv 9000 router and the 540, 560, 1000, 5000, 5500 and 6000 series routers from its Network Convergence System (NCS) line. However, only routers running its Cisco IOS XR Software with the Cisco Discovery Protocol enabled globally and on at least one interface are vulnerable to potential attacks.



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