FAQ
What system configurations would expose this vulnerability? Servers that have installed the Network File System are exposed to this vulnerability in rpcxdr.sys. An attacker would require read or write permission to any file on an NFS share on the victim system. If NFS is configured to allow anonymous access, then the victim system would be vulnerable to unauthenticated attackers. Does this security update apply to non-server systems? Yes. While servers are much more likely to be exposed to this vulnerability, the security update to rpcxdr.sys applies to all Windows editions in the Security Updates table.