Description
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly validate user-mode input, which allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via a crafted application, aka "Win32k Null Pointer De-reference Vulnerability."
Exploits (1)
exploitdb
WORKING POC
VERIFIED
by KiDebug · textdoswindows
https://www.exploit-db.com/exploits/18024
References (3)
Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id?1026165
Vendor Advisory vendor-advisory
x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077
Third Party Advisory, VDB Entry vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12935
Scores
CVSS v3
7.1
EPSS
0.0337
EPSS Percentile
87.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (7)
microsoft/windows_2003_server
microsoft/windows_7
(3 CPE variants)
microsoft/windows_server_2003
microsoft/windows_server_2008
(3 CPE variants)
microsoft/windows_server_2008
r2 (2 CPE variants)
microsoft/windows_vista
microsoft/windows_xp
(2 CPE variants)
Published
Oct 12, 2011
Tracked Since
Feb 18, 2026