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Unrated severityNVD Advisory· Published Dec 9, 2009· Updated Apr 23, 2026

CVE-2009-2505

CVE-2009-2505

Description

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."

Affected products

4
  • Microsoft/Windows Server 20083 versions
    cpe:2.3:o:microsoft:windows_server_2008:*:sp2:itanium:*:*:*:*:*+ 2 more
    • cpe:2.3:o:microsoft:windows_server_2008:*:sp2:itanium:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:sp2:x32:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2008:sp2:x64:*:*:*:*:*:*
  • Microsoft/Windows Vista
    cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

4

News mentions

0

No linked articles in our index yet.