Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
Microsoft has released security bulletin MS11-029. To view the complete security bulletin, visit one of the following Microsoft websites:
Known issues and additional information about this security update
The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information. If this is the case, the known issue is listed below each article link.
2412687 MS11-029: Description of the security update for Windows GDI+: April 12, 2011
2509461 MS11-023: Description of the security update for Office XP: April 12, 2011
update security_patch security_update security bug flaw vulnerability malicious attacker exploit registry unauthenticated buffer overrun overflow specially-formed scope specially-crafted denial of service DoS TSE