Microsoft will release an out of band update today to address the LNK Vulnerability (2286198) that is being exploited. The security update will be released at approximately 10:00 Pacific Daylight Time.
"We are releasing the bulletin as we've completed the required testing and the update has achieved the appropriate quality bar for broad distribution to customers. […] We firmly believe that releasing the update out of band is the best thing to do to help protect our customers."