Vulnerability Report

CVE-2009-2505

Title: Microsoft Windows Server 2008 RCE

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2009-2505.

CWE Category CWE-287
Published Date Dec 09, 2009
Modified Date Jun 16, 2026
Exploit Status Not Found
Score 10.0 CVSS v2.0
Exploit Probability (EPSS)
31.61%

Vulnerability Summary

CVE-2009-2505: The Internet Authentication Service (IAS) in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol (PEAP) authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed request, aka "Internet Authentication Service Memory Corruption Vulnerability."

Impacted Vendors

M
microsoft 2

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%3A6063 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%3A6063
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-2009-2505 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.