This host is missing a critical security update according to Microsoft Bulletin MS09-007.

Attacker who successfully exploited would be able to authenticate to a server using only an authorized user's digital certificate and without the associated private key. Impact Level: System

Run Windows Update and update the listed hotfixes or download and update mentioned hotfixes in the advisory from the below link, http://www.microsoft.com/technet/security/bulletin/ms09-007.mspx

Spoofing flaw exists in the Microsoft Windows SChannel (Secure Channel) authentication component when using certificate based authentication.

Microsoft Windows 2K Service Pack 4 and prior. Microsoft Windows XP Service Pack 3 and prior. Microsoft Windows 2003 Service Pack 2 and prior. Microsoft Windows Vista Service Pack 1 and prior. Microsoft Windows Server 2008 Service Pack 1 and prior.

• http://www.microsoft.com/technet/security/bulletin/ms09-007.mspx

---

Updated on 2015-03-25