MS04-022: A vulnerability in Task Scheduler could allow code execution

Microsoft has released security bulletin MS04-022. The security bulletin contains all the relevant information about the security update, including file manifest information and deployment options. To view the complete security bulletin, visit the following Microsoft Web site:

Known issues

• The issue that is described in the following Microsoft Knowledge Base article may occur:
  871245 You receive a "Cannot delete this scheduled job" error message when you try to delete a scheduled task in Windows 2000
  
  
  Note Knowledge Base article 871245 was replaced with Knowledge Base article 873405. For more information about 873405, click the following article number to view the article in the Microsoft Knowledge Base:
  
  

  873405 "The AT job ID does not exist" error message is returned by the NetScheduleJobDel function if you delete a scheduled task in Windows 2000
  
  
• When you try to install this security update on a Microsoft Windows NT 4.0-based computer, you may receive the following error message:
  This package can only be installed on Windows NT 4.0.
  This issue may occur if Task Scheduler is not installed on your Windows NT 4.0-based computer. If the Mstask.dll file is not on your computer, the security update that this article describes is not required.