Vulnerability Report

CVE-2009-1127

Title: Microsoft Windows 2003 Server Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2009-1127.

CWE Category CWE-20

Published Date Nov 11, 2009

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 7.2 CVSS v2.0

Exploit Probability (EPSS)

1.55%

Vulnerability Summary

CVE-2009-1127: 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."

Impacted Vendors

microsoft 5

Reference Links

http://www.us-cert.gov/cas/techalerts/TA09-314A.html https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-065 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5588 http://www.us-cert.gov/cas/techalerts/TA09-314A.html https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-065 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5588

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.2

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-1127 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 09, 2025 MODIFIED

Vulnerability data or affected products updated.

November 11, 2009 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:L/AC:L/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.