Microsoft has released security bulletin MS14-068 and updated MS14-066. Both are critical for Windows Servers.

Bulletin Information:
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MS14-068 - Critical

- https://technet.microsoft.com/library/security/ms14-068
- Reason for Revision: V1.0 (November 18, 2014): Bulletin
published.
- Originally posted: November 18, 2014
- Updated: November 18, 2014
- Bulletin Severity Rating: Critical
- Version: 1.0


MS14-066 - Critical

- https://technet.microsoft.com/library/security/ms14-066
- Reason for Revision: V2.0 (November 18, 2014): Bulletin revised
to announce the reoffering of the 2992611 update to systems
running Windows Server 2008 R2 and Windows Server 2012. The
reoffering addresses known issues that a small number of
customers experienced with the new TLS cipher suites that were
included in the original release. Customers running Windows
Server 2008 R2 or Windows Server 2012 who installed the 2992611
update prior to the November 18 reoffering should reapply the
update. See Microsoft Knowledge Base Article 2992611 for more
information.
- Originally posted: November 11, 2014
- Updated: November 18, 2014
- Bulletin Severity Rating: Critical
- Version: 2.0


MS14-NOV

- https://technet.microsoft.com/library/security/ms14-nov
- Reason for Revision: V2.0 (November 18, 2014): Bulletin Summary
revised to document the out-of-band release of MS14-068 and,
for MS14-066, to announce the reoffering of the 2992611 update
to systems running Windows Server 2008 R2 and Windows Server
2012. See the respective bulletins for more information.
- Originally posted: November 11, 2014
- Updated: November 18, 2014
- Version: 2.0