CVE-2009-1127
Microsoft Windows - Local Privilege Escalation via Win32k.sys NULL Pointer Dereference
Title source: llmDescription
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."
References (3)
Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5588
Vendor Advisory vendor-advisory
x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-065
US Government Resource third-party-advisory
x_refsource_cert
http://www.us-cert.gov/cas/techalerts/TA09-314A.html
Scores
EPSS
0.0155
EPSS Percentile
72.1%
Details
CWE
CWE-20
Status
published
Products (5)
microsoft/windows_2000
microsoft/windows_2003_server
(3 CPE variants)
microsoft/windows_server_2008
(6 CPE variants)
microsoft/windows_vista
(4 CPE variants)
microsoft/windows_xp
(3 CPE variants)
Published
Nov 11, 2009
Tracked Since
Feb 18, 2026