Microsoft Security Bulletin MS14-049 - Important

Vulnerability in Windows Installer Service Could Allow Elevation of Privilege (2962490)

Knowledge Base Article

Knowledge Base Article: 2962490

Update FAQ

I am running Windows Server 2003 and install updates manually. Are there any prerequisites for installing the 2918614 update?

Yes. Customers who are running Windows Server 2003 and who install updates manually must install Windows Installer 4.5 before installing the 2918614 update. Windows Installer 4.5 will be installed automatically for customers who have automatic updating enabled. For more information about the prerequisite Installer update, see Microsoft Knowledge Base Article 942288.

Download MSI 4.5 Here - https://www.microsoft.com/en-in/download/confirmation.aspx?id=8483

Ref: https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2014/ms14-049?redirectedfrom=MSDN

Installer 4.5: https://support.microsoft.com/en-us/help/942288/windows-installer-4-5-is-available

Issues after this update.

https://support.microsoft.com/en-us/help/3008627/unexpected-uac-prompt-after-you-install-update-2918614-in-windows