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.

Severity Rating: Important
Revision Note: V1.0 (June 14, 2016): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The more severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted .pdf file. An attacker who successfully exploited the vulnerabilities could cause arbitrary code to execute in the context of the current user. However, an attacker would have no way to force a user to open a specially crafted .pdf file.

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 a user opens a specially crafted document or visits a specially crafted website.

Revision Note: V2.0 (May 18, 2016): Advisory updated to provide links to the current information regarding the use of the SHA1 hashing algorithm for the purposes of SSL and code signing. For more information, see Windows Enforcement of Authenticode Code Signing and Timestamping.
Summary: Microsoft is announcing a policy change to the Microsoft Root Certificate Program. The new policy will no longer allow root certificate authorities to issue X.509 certificates using the SHA-1 hashing algorithm for the purposes of SSL and code signing after January 1, 2016. Using the SHA-1 hashing algorithm in digital certificates could allow an attacker to spoof content, perform phishing attacks, or perform man-in-the-middle attacks.

Severity Rating: Important
Revision Note: V1.0 (May 10, 2016): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft .NET Framework. The vulnerability could cause information disclosure if an attacker injects unencrypted data into the target secure channel and then performs a man-in-the-middle (MiTM) attack between the targeted client and a legitimate server.

Severity Rating: Critical
Revision Note: V1.0 (May 10, 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.