Severity Rating: Critical
Revision Note: V1.1 (February 19, 2016): Removed update 3141092 from the Affected Software table. For Internet Explorer 11, to be fully protected from the vulnerabilities described in this bulletin, customers must also install update 3141092. Microsoft recommends to first install update 3134814, and then install update 3141092. For more information about the 3141092 update, see Microsoft Knowledge Base Article 3141092. This is an informational change only.
Summary: This security update resolves vulnerabilities in Internet Explorer. The more severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.