Patch Tuesday June 2011: Critical Security Issues in Windows, IE, Office

Microsoft has issued an advanced security bulletin notification for June 2011 Patch Tuesday.

Unlike last month’s only two bulletins, this month Microsoft has issued 16 bulletins, covering a range of security holes in the Windows operating system, .NET Framework, Silverlight, Forefront Threat Management Gateway, Internet Explorer, Microsoft Office, SQL Server and Visual Studio.

Nine of the 16 security bulletins are rated “critical” by Microsoft and almost all of them requires a system restart. The rest seven bulletins are rated ”Important.” The 9 critical bulletins are for a remote code execution vulnerability. And out of the 9, two of the critical bulletins will address severe vulnerabilities in the Internet Explorer web browser. This month will include a critical security patch for the latest Internet Explorer 9 web browser.

The following table summarizes the security bulletins for this month in order of severity.

Bulletin ID	Maximum Severity Rating and Vulnerability Impact	Restart Requirement	Affected Software
Bulletin 1	Critical Remote Code Execution	Requires restart	Microsoft Windows
Bulletin 2	Critical Remote Code Execution	May require restart	Microsoft Windows, Microsoft .NET Framework, Microsoft Silverlight
Bulletin 3	Critical Remote Code Execution	Requires restart	Microsoft Forefront Threat Management Gateway
Bulletin 4	Critical Remote Code Execution	Requires restart	Microsoft Windows
Bulletin 5	Critical Remote Code Execution	Requires restart	Microsoft Windows
Bulletin 6	Critical Remote Code Execution	Requires restart	Microsoft Windows
Bulletin 7	Critical Remote Code Execution	May require restart	Microsoft Windows, Microsoft .NET Framework
Bulletin 8	Critical Remote Code Execution	Requires restart	Microsoft Windows, Internet Explorer
Bulletin 9	Critical Remote Code Execution	May require restart	Microsoft Windows, Internet Explorer
Bulletin 10	Important Information Disclosure	May require restart	Microsoft Windows
Bulletin 11	Important Remote Code Execution	May require restart	Microsoft Office
Bulletin 12	Important Elevation of Privilege	Requires restart	Microsoft Windows
Bulletin 13	Important Denial of Service	Requires restart	Microsoft Windows
Bulletin 14	Important Denial of Service	Requires restart	Microsoft Windows
Bulletin 15	Important Information Disclosure	May require restart	Microsoft Office, Microsoft SQL Server, Microsoft Visual Studio
Bulletin 16	Important Elevation of Privilege	May require restart	Microsoft Windows

All supported versions of Windows and Internet Explorer are affected by this month’s patches, which are scheduled for release on Tuesday June 14, 2011. Microsoft will as usual host a webcast to address customer questions on the security bulletins on June 15, 2011, at 11:00 AM Pacific Time (US & Canada).

Patch Tuesday June 2011: Critical Security Issues in Windows, IE, Office

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