10
CVSSv2

CVE-2009-3677

Published: 09/12/2009 Updated: 07/12/2023
CVSS v2 Base Score: 10 | Impact Score: 10 | Exploitability Score: 10
VMScore: 890
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Summary

The Internet Authentication Service (IAS) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold does not properly verify the credentials in an MS-CHAP v2 Protected Extensible Authentication Protocol (PEAP) authentication request, which allows remote malicious users to access network resources via a malformed request, aka "MS-CHAP Authentication Bypass Vulnerability."

Vulnerability Trend

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microsoft windows xp

microsoft windows xp -

microsoft windows vista

microsoft windows 2000

microsoft windows server 2008

microsoft windows server 2003