The Server service (srvsvc.dll) in Windows XP SP1 and SP2 allows remote attackers to obtain sensitive information (users who are accessing resources) via an anonymous logon using a named pipe, which is not properly authenticated, aka the "Named Pipe Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3055
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2292
https://exchange.xforce.ibmcloud.com/vulnerabilities/19093
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-007
http://www.us-cert.gov/cas/techalerts/TA05-039A.html
http://www.securityfocus.com/bid/12486
http://www.kb.cert.org/vuls/id/939074