Downed US vulnerability catalog infected for at least two months. A vulnerability in Adobe's ColdFusion software allowed the National Vulnerability Database and other National Institute for Standards and Technology (NIST) websites to be infected with malware, prompting NIST to take them offline.
Source:
http://www.theregister.co.uk/2013/03/14/adobe_coldfusion_vulns_compromise_us_malware_catalog/