Risk: High
Microsoft has patched one critical and one important issue in November's Patch Tuesday bulletin.
The critical vulnerability resides in Windows URL Handling and if expolited, may lead to the execution of arbitrary code. The vulnerability exists in the way that the Windows shell handles specifically crafted URIs that are passed to it.
Microsoft has identified an important spoofing vulnerability that exists in Windows DNS Servers and could allow an attacker to send specially crafted responses to DNS requests, thereby spoofing or redirecting Internet traffic from legitimate locations.