After you apply this update, you will see two identical entries of KB979440 in Installed Updates. This is expected behavior because this update contains two .msp files. Therefore, you have two entries for this update in Installed Updates.
Known issues about this security update
Windows Update returns error code 646 or 0x80070646
This issue occurs because of a corrupted system environment variable or failed privilege escalation. You may experience this issue when Office Update fails to install from Microsoft Update. You may also experience this issue when a manual installation that uses the /quiet setup switch and the /passive setup switch fails. For more information about how to resolve these issues, click the following article number to view the article in the Microsoft Knowledge Base:
2258121 You receive error code 0x80070646 or error code 646 when you attempt to install Microsoft Office updates
The English (United States) version of this security update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Microsoft Office Access 2007
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 WinNT Win2000