Microsoft released twelve (12) bulletins. Eight (8) bulletins are identified as Critical and the remaining four (4) are rated Important in severity. The updates address vulnerabilities in Microsoft Windows, Microsoft Edge, Internet Explorer, Microsoft .NET Framework, Microsoft Office, Skype for Business, Microsoft Lync Silverlight and Microsoft Silverlight.
Details about the CVEs can be found in the below-referenced TechNet Security Bulletin. If you are prioritizing updates, the most critical is MS15-0131.
Also released today is Microsoft Security Advisory 3123040 which revokes a certificate for *.xboxlive.com where private keys were disclosed.
Microsoft Security Bulletin for December 2015
Details about the CVEs can be found in the below-referenced TechNet Security Bulletin. If you are prioritizing updates, the most critical is MS15-0131.
Also released today is Microsoft Security Advisory 3123040 which revokes a certificate for *.xboxlive.com where private keys were disclosed.
Microsoft Security Bulletin for December 2015