Vulnerability Report

CVE-2009-3677

RCE

Title: Microsoft Windows 2000 RCE

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2009-3677.

CWE Category CWE-94
Published Date Dec 09, 2009
Modified Date Jun 16, 2026
Exploit Status Not Found
Score 10.0 CVSS v2.0
Exploit Probability (EPSS)
21.82%

Vulnerability Summary

CVE-2009-3677: 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."

Impacted Vendors

M
microsoft 5

Reference Links

http://www.securitytracker.com/id?1023291 http://www.us-cert.gov/cas/techalerts/TA09-342A.html https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-071 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6209 http://www.securitytracker.com/id?1023291 http://www.us-cert.gov/cas/techalerts/TA09-342A.html https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-071 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6209
CVSS v2.0
Source Entity [email protected]
Severity HIGH
10.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-3677 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A
Complexity N/A
Privileges N/A
Interaction NONE
CVSS Vector String AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.