Severity Rating: Important
Revision Note: V1.0 (July 14, 2015): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if the Windows Installer service improperly runs custom action scripts. An attacker must first compromise a user who is logged on to the target system to exploit the vulnerability. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights.

Severity Rating: Critical
Revision Note: V1.0 (July 14, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Windows Hyper-V. The vulnerabilities could allow remote code execution in a host context if a specially crafted application is run by an authenticated and privileged user on a guest virtual machine hosted by Hyper-V. An an attacker must have valid logon credentials for a guest virtual machine to exploit this vulnerability.

Severity Rating: Important
Revision Note: V1.0 (July 14, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow elevation of privilege if used in conjunction with another vulnerability that allows arbitrary code to be run. Once the other vulnerability has been exploited, an attacker could then exploit the vulnerabilities addressed in this bulletin to cause arbitrary code to run at a medium integrity level.

Severity Rating: Important
Revision Note: V1.0 (July 14, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow Remote Code Execution if an attacker first places a specially crafted dynamic link library (DLL) file in the target user’s current working directory and then convinces the user to open an RTF file or to launch a program that is designed to load a trusted DLL file but instead loads the attacker’s specially crafted DLL file. An attacker who successfully exploited the vulnerabilities could take complete 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: Critical
Revision Note: V1.0 (July 14, 2015): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if an attacker sends a specially crafted sequence of packets to a targeted system with Remote Desktop Protocol (RDP) enabled. By default, RDP is not enabled on any Windows operating system. Systems that do not have RDP enabled are not at risk.

Severity Rating: Important
Revision Note: V1.0 (July 14, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application.

Severity Rating: Important
Revision Note: V1.0 (July 14, 2015): 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 a target system and runs a specially crafted application. An attacker who successfully exploited this vulnerability could execute arbitrary code and take complete 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 (July 14, 2015): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability, which exists in Windows Remote Procedure Call (RPC) authentication, could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application. An attacker who successfully exploited this vulnerability could take complete control of the 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 (July 14, 2015): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if the Windows graphics component fails to properly process bitmap conversions. An authenticated attacker who successfully exploited this vulnerability could elevate privileges on a targeted system. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights. An attacker must first log on to the system to exploit this vulnerability.