| CVE-2009-3677 | Date: (C)2009-12-09 (M)2023-12-22 |
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 attackers to access network resources via a malformed request, aka "MS-CHAP Authentication Bypass Vulnerability."
CVSS Score and Metrics +CVSS Score and Metrics -| CVSS V2 Severity: |
| CVSS Score : 10.0 |
| Exploit Score: 10.0 |
| Impact Score: 10.0 |
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| CVSS V2 Metrics: |
| Access Vector: NETWORK |
| Access Complexity: LOW |
| Authentication: NONE |
| Confidentiality: COMPLETE |
| Integrity: COMPLETE |
| Availability: COMPLETE |
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