CVE-2009-1127

Severity CVSS v4.0:

Pending analysis

Type:

CWE-20 Input Validation

Publication date:

11/11/2009

Last modified:

09/04/2025

Description

win32k.sys in the kernel in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 does not correctly validate an argument to an unspecified system call, which allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference, aka "Win32k NULL Pointer Dereferencing Vulnerability."

Impact

Vector 2.0

AV:L/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

7.20

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:microsoft:windows_2000::sp4::::::*
cpe:2.3:o:microsoft:windows_2003_server::sp2::::::*
cpe:2.3:o:microsoft:windows_2003_server::sp2:itanium:::::
cpe:2.3:o:microsoft:windows_2003_server::sp2:x64:::::
cpe:2.3:o:microsoft:windows_server_2008:::x32:::::*
cpe:2.3:o:microsoft:windows_server_2008:::x64:::::*
cpe:2.3:o:microsoft:windows_server_2008::sp2:x32:::::
cpe:2.3:o:microsoft:windows_server_2008::sp2:x64:::::
cpe:2.3:o:microsoft:windows_server_2008:-:gold:itanium:::::*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:::::*
cpe:2.3:o:microsoft:windows_vista::::::::
cpe:2.3:o:microsoft:windows_vista:::x64:::::*
cpe:2.3:o:microsoft:windows_vista::sp1::::::*
cpe:2.3:o:microsoft:windows_vista::sp2::::::*
cpe:2.3:o:microsoft:windows_xp::sp2::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:o:microsoft:windows_2000::sp4::::::*
cpe:2.3:o:microsoft:windows_2003_server::sp2::::::*
cpe:2.3:o:microsoft:windows_2003_server::sp2:itanium:::::
cpe:2.3:o:microsoft:windows_2003_server::sp2:x64:::::
cpe:2.3:o:microsoft:windows_server_2008:::x32:::::*
cpe:2.3:o:microsoft:windows_server_2008:::x64:::::*
cpe:2.3:o:microsoft:windows_server_2008::sp2:x32:::::
cpe:2.3:o:microsoft:windows_server_2008::sp2:x64:::::
cpe:2.3:o:microsoft:windows_server_2008:-:gold:itanium:::::*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:::::*
cpe:2.3:o:microsoft:windows_vista::::::::
cpe:2.3:o:microsoft:windows_vista:::x64:::::*
cpe:2.3:o:microsoft:windows_vista::sp1::::::*
cpe:2.3:o:microsoft:windows_vista::sp2::::::*
cpe:2.3:o:microsoft:windows_xp::sp2::::::*

CVE-2009-1127

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools