http://technet.microsoft.com/en-us/security/bulletin/ms11-037 2011-11-08: Published: Tuesday, June 14, 2011 | Updated: Tuesday, November 08, 2011
Vulnerability in MHTML Could Allow Information Disclosure (2544893)

Revisions
* V1.0 (June 14, 2011): Bulletin published.
* V2.0 (November 8, 2011): Bulletin rereleased to reoffer the update on all supported editions of Windows XP and Windows Server 2003. Customers using Windows XP or Windows Server 2003, including those who have already successfully installed the update originally offered on June 14, 2011, should install the reoffered update. See the Update FAQ for details.

Frequently Asked Questions (FAQ) Related to This Security Update
Why was this bulletin rereleased on November 8, 2011?
Microsoft rereleased this bulletin to reoffer security update KB2544893 for all supported editions of Windows XP and Windows Server 2003. The new offering of this update provides systems running Windows XP or Windows Server 2003 with the same cumulative protection that is provided by this update for all other affected operating systems. Systems running supported editions of Windows XP and Windows Server 2003 will automatically be offered the new version of this update. Customers using these operating systems, including those who have already successfully installed the update originally offered on June 14, 2011, should install the reoffered update.