Revision Note: V1.1 (June 15, 2016): For MS16-072, added a Known Issue to the Executive Summaries table. The updates in MS16-072 change the security context with which user group policies are retrieved. For more information about this by-design behavior change, see Microsoft Knowledge Base Article 3163622. For MS16-074, revised the Executive Summary to correct the attack vector description. This is an informational change only.
Summary: This bulletin summary lists security bulletins released for June 2016.

Severity Rating: Important
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker launches a man-in-the-middle (MiTM) attack against the traffic passing between a domain controller and the target machine .

Severity Rating: Critical
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Office. The vulnerabilities could allow remote code execution if a user opens a specially crafted Microsoft Office file. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

Severity Rating: Important
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application.

Severity Rating: Critical
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Edge. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Microsoft Edge. An attacker who successfully exploited the vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than users with administrative user rights.

Severity Rating: Important
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves vulnerabilites in Microsoft Exchange Server. The most severe of the vulnerabilities could allow information disclosure if an attacker sends a specially crafted image URL in an Outlook Web Access (OWA) message that is loaded, without warning or filtering, from the attacker-controlled URL.

Severity Rating: Important
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves a vulnerability in Active Directory. The vulnerability could allow denial of service if an authenticated attacker creates multiple machine accounts. To exploit the vulnerability an attacker must have an account that has privileges to join machines to the domain.

Severity Rating: Important
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application.

Severity Rating: Critical
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if an attacker sends specially crafted requests to a DNS server.

Severity Rating: Critical
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves vulnerabilities in Internet Explorer. The most 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 the vulnerabilities could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker 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.