Microsoft’s December 2016 Patch Tuesday updates include a total of 12 critical and important security bulletins that resolve vulnerabilities in Windows, Office, Internet Explorer and Edge.

Several of the vulnerabilities patched this week have already been publicly disclosed. For instance, the critical bulletin MS16-144 fixes eight remote code execution, security bypass and information disclosure flaws. Of these, CVE-2016-7282, CVE-2016-7281 and CVE-2016-7202 had been publicly disclosed before they were addressed by Microsoft.