Severity Rating: Important
Revision Note: V1.0 (January 13, 2015): V1.0 (January 13, 2015): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass by unintentionally relaxing the firewall policy and/or configuration of certain services when an attacker on the same network as the victim spoofs responses to DNS and LDAP traffic initiated by the victim.

Severity Rating: Critical
Revision Note: V1.0 (January 13, 2015): V1.0 (January 13, 2015): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if an attacker sends specially crafted packets to an affected Windows server. Only customers who enable this service are vulnerable. By default, Telnet is installed but not enabled on Windows Server 2003. Telnet is not installed by default on Windows Vista and later operating systems.

Severity Rating: Important
Revision Note: V1.0 (January 13, 2015): Bulletin published
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow denial of service on an Internet Authentication Service (IAS) or Network Policy Server (NPS) if an attacker sends specially crafted username strings to the IAS or NPS. Note that the denial of service vulnerability would not allow an attacker to execute code or to elevate user rights; however, it could prevent RADIUS authentication on the IAS or NPS.

Severity Rating: Important
Revision Note: V1.0 (January 13, 2015): V1.0 (January 13, 2015): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker convinces a user to run a specially crafted application. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Severity Rating: Important
Revision Note: V1.0 (January 13, 2015): V1.0 (January 13, 2015): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker logs on to a system and runs a specially crafted application. An authenticated attacker who successfully exploited this vulnerability could bypass existing permission checks that are performed during cache modification in the Microsoft Windows Application Compatibility component and execute arbitrary code with elevated privileges.