HIGH
Unspecified vulnerability in Microsoft IIS 6.0, 7.0, and 7.5, when Extended Protection for Authentication is enabled, allows remote authenticated users to execute arbitrary code via unknown vectors related to "token checking" that trigger memory corruption, aka "IIS Authentication Memory Corruption Vulnerability."
http://www.securityfocus.com/bid/40573
http://www.us-cert.gov/cas/techalerts/TA10-159B.html
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-040
https://exchange.xforce.ibmcloud.com/vulnerabilities/58864
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7149