Microsoft did not issue official fixes during the recent January Patch Tuesday update window.
January 18th 2019, By Catalin Cimpanu
In December 2018, a security researcher going by the name of SandboxEscaper published details and proof-of-concept (PoC) demo code for two Windows zero-days.
Today, cyber-security firm Acros Security published a temporary patch for the second zero-day, a patch that protects Windows systems against any exploitation attempts.
The temporary patch was released because Microsoft didn't release an official patch for either of the two zero-days during the January Patch Tuesday update window.