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Microsoft Security Update for April 2011 has been released and is available for download through Windows Update. This is a huge update with 17 patches which fix about 64 security issues in Microsoft products. While the March update only had Windows patches, the April security update include patches for Windows, Office and Internet Explorer.

Microsoft security update for April includes the following security bulletins:

MS11-018 Cumulative Security Update for Internet Explorer (2497640)
MS11-019 Vulnerabilities in SMB Client Could Allow Remote Code Execution (2511455)
MS11-020 Vulnerability in SMB Server Could Allow Remote Code Execution (2508429)
MS11-024 Vulnerability in Windows Fax Cover Page Editor Could Allow Remote Code Execution (2527308)
MS11-026 Vulnerability in MHTML Could Allow Information Disclosure (2503658)
MS11-027 Cumulative Security Update of ActiveX Kill Bits (2508272)
MS11-029 Vulnerability in GDI+ Could Allow Remote Code Execution (2489979)
MS11-030 Vulnerability in DNS Resolution Could Allow Remote Code Execution (2509553)
MS11-031 Vulnerability in JScript and VBScript Scripting Engines Could Allow Remote Code Execution (2514666)
MS11-032 Vulnerability in the OpenType Compact Font Format (CFF) Driver Could Allow Remote Code Execution (2507618)
MS11-034 Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2506223)
MS11-033 Vulnerability in WordPad Text Converters Could Allow Remote Code Execution (2485663)
And the following Knowledge Base (KB) articles are related to the security issues addressed in the April update:

System Requirements

  • Supported Operating Systems:Windows 7;Windows 7 Service Pack 1;Windows Server 2003 Service Pack 2;Windows Server 2003 Service Pack 2 for Itanium-based Systems;Windows Server 2003 Service Pack 2 x64 Edition;Windows Server 2008;Windows Server 2008 R2;Windows Server 2008 R2 SP1;Windows Server 2008 Service Pack 2;Windows Vista 64-bit Editions Service Pack 1;Windows Vista Service Pack 1;Windows XP Professional x64 Edition;Windows XP Service Pack 3

There are two ways to download the security updates. You can go to the Microsoft Download Center and download the security patches individually or otherwise download the full ISO image of April Security Updates [4330.3MB] which includes all the security patches released by Microsoft in April.

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