Microsoft today released an off-cycle patch for a zero-day memory corruption vulnerability in Internet Explorer.
CVE-2019-1367 is a flaw that can corrupt memory in such a way that an attacker could execute arbitrary code in Internet Explorer, and do so in the context (at the permission level) of the current user.
In the worst case, an attacker could install programs, view, change, and delete data, and create new user accounts with full user privileges, while the legitimate user is logged in as an admin.
According to Microsoft, the patch remediates the vulnerability by changing the way in which the scripting engine handles objects in memory.
For more, read here.