Vulnerability lies in the DNS Server Service, which looks up IP addresses to allow a website to be called into a browser. Affected products are Windows 2000 Server Service Pack 4, and Windows Server 2003 Service Pack 1 and 2. The company is working on a patch, but no release date has been set. Microsoft just issued seven critical patches on Tuesday, its monthly patch day, and isnt due for another round until May 8. Danish security vendor Secunia rated the problem as “highly critical” in an advisory.”]
Source: https://www.csoonline.com/article/2121873/microsoft-server-has-dangerous-dns-vulnerability.html