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CVE-2009-2505

CRITICAL CVSS: 10.0 Published: 2009-12-09 Modified: 2026-06-16

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 Platforms

Microsoft Windows Server 2008Microsoft Windows Vista

Weakness Type

CWE-287

References