Cisco has released a security advisory to address a vulnerability in Cisco IOS XR Software version 4.3.1. If successful, this exploitation could result in complete packet memory exhaustion, rendering critical services on the affected device unable to allocate packets, resulting in a denial of service (DoS) condition.
US-CERT encourages users and administrators to review the following Cisco Security Advisory and apply any necessary updates or workarounds to help mitigate the risk.