Severity Rating: Critical
Revision Note: V1.0 (March 11, 2014): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a user opens a specially crafted image file. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. Users 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 (March 11, 2014): Bulletin published.
Summary: This security update resolves one publicly disclosed vulnerability and one privately reported vulnerability in Microsoft Windows. The more severe of these vulnerabilities could allow elevation of privilege if an attacker logs on to the system and runs a specially crafted application. An attacker must have valid logon credentials and be able to log on locally to exploit these vulnerabilities.

Severity Rating: Important
Revision Note: V1.0 (March 11, 2014): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Silverlight. The vulnerability could allow security feature bypass if an attacker hosts a website that contains specially crafted Silverlight content that is designed to exploit the vulnerability, and then convinces a user to view the website. In all cases, however, an attacker would have no way to force users to visit a website. Instead, an attacker would have to convince users to visit a website, typically by getting them to click a link in an email message or in an Instant Messenger message that takes them to the attacker’s website. It could also be possible to display specially crafted web content by using banner advertisements or by using other methods to deliver web content to affected systems.

Severity Rating: Critical
Revision Note: V1.1 (February 28, 2014): Bulletin revised to announce a detection change in the 2912390 update for Windows 8.1 for 32-bit Systems, Windows 8.1 for x64-based Systems, Windows RT 8.1, and Windows Server 2012 R2. This is a detection change only. There were no changes to the update files. Customers who have already successfully updated their systems do not need to take any action.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker would have no way to force users to view specially crafted content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email message or in an Instant Messenger message that takes users to an attacker’s website, or by getting them to open an attachment sent through email.

Severity Rating: Important
Revision Note: V1.1 (February 28, 2014): Bulletin revised to announce a detection change in the 2916036 update for Windows 8.1 for 32-bit Systems, Windows 8.1 for x64-based Systems, Windows Server 2012 R2, and Windows RT 8.1. This is a detection change only. There were no changes to the update files. Customers who have already successfully updated their systems do not need to take any action.
Summary: This security update resolves a publicly disclosed vulnerability in Microsoft XML Core Services included in Microsoft Windows. The vulnerability could allow information disclosure if a user views a specially crafted webpage using Internet Explorer. An attacker would have no way to force users to view specially crafted content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email message or in an Instant Messenger message that takes users to an attacker’s website, or by getting them to open an attachment sent through email.