With this month's Patch Tuesday round of security fixes, Microsoft has ended its support for the Windows Server 2003 operating system.
"For anyone who still runs Windows 2003, I hope it is where no one can access it, and they are working on a project to replace those servers," said Wolfgang Kandek, chief technology officer for IT security firm Qualys.
For July, Microsoft issued 14 bulletins, covering a total of 58 vulnerabilities.
The patches cover three critical holes in Microsoft Windows, in both the server and desktop editions, as well as one critical vulnerability in Internet Explorer, versions 7 through 11.
Administrators should apply these critical patches as quickly as possible because the vulnerabilities are already being used by attackers to gain entry into systems.
The remaining patches, deemed by Microsoft as important but not critical, address additional vulnerabilities in Microsoft Office and SQL Server, as well as additional vulnerabilities in Windows.