KB912919 Security Update for Windows XP is the latest security update for Windows XP to cater for its remote code execution security issue.

The remote code execution security bug is affecting almost all version of Microsoft Windows, including Windows Server 2003, Windows XP(with SP1 and SP2) and Windows 2000.

Refer to the table if you need to identify whether your Windows is in the list.

Windows	Version
Microsoft Windows Server 2003	Datacenter Edition (32-bit x86)
	Enterprise Edition (32-bit x86)
	Standard Edition (32-bit x86)
	Web Edition
	Datacenter Edition for Itanium-Based Systems
	Enterprise Edition for Itanium-based Systems
	R2 Standard Edition (32-bit x86)
	R2 Enterprise Edition (32-Bit x86)
	R2 Datacenter Edition (32-Bit x86)
	R2 Standard x64 Edition
	R2 Datacenter x64 Edition
	R2 Enterprise x64 Edition
	Standard x64 Edition
	Enterprise x64 Edition
	Datacenter x64 Edition
Microsoft Windows XP	Professional
	Home Edition
	Tablet PC Edition
	Tablet PC Edition 2005
	Media Center Edition 2002
	Media Center Edition 2005
	Professional x64 Edition
Microsoft Windows 2000	Advanced Server
	Datacenter Server
	Professional Edition
	Server
	Small Business Server 2000 Standard Edition

You may have updated KB912919 Security Update for Windows XP if you use the Automatic Windows Update feature in Windows XP.

If you are not, then please follow the step-by step guide below for the update:

• Goto Start -> Control Panel -> Add or Remove Programs.
  
  

• Make sure to check the “Show updates” box in the upper center of the Add or Remove Programs window.
• Browse to Windows XP - Software Updates -> Security Update for Windows XP(KB912919). If you cannot find the entry, please also make sure to sort the list by Name.
• Once you have found KB912919, just update it to have your system patched.

If you cannot find KB912919 in your Add or Remove programs, then you will have to go find it from Microsoft website and download it.

To make it simple for you, here is the link.

Please make sure you download and patch KB912919 properly, you do not want other to gain access to your computer and mess around with it.