71735 : Microsoft Windows win32k.sys Driver NULL Pointer De-reference Unspecified Local Privilege Escalation (2011-1229)
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Disclosure Date


Microsoft Windows contains a flaw that may allow an attacker to gain access to unauthorized privileges. The issue is triggered when a local, context-dependent attacker uses a crafted application to trigger a null pointer dereference, allowing them to gain elevated privileges.


Location: Local Access Required, Context Dependent
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Patch / RCS
Exploit: Exploit Private
Disclosure: Vendor Verified


Currently, there are no known workarounds or upgrades to correct this issue. However, Microsoft has released a patch to address this vulnerability.


Microsoft Corporation
Windows XP
Professional x64 Edition SP2
Windows Vista
x64 Edition SP1
x64 Edition SP2
Windows Server 2008
for Itanium-based Systems
for Itanium-based Systems SP2
Windows 7
Windows Server 2003
x64 Edition SP2
with SP2 for Itanium-based Systems
Windows Server 2008 R2
for Itanium-based Systems
for x64-based Systems SP1
for x64-based Systems
for Itanium-based Systems SP1


Tools & Filters



CVSSv2 Score

CVSSv2 Base Score = 7.2
Source: nvd.nist.gov | Generated: 2011-04-14 | Disagree?

Access_vector_0 Access_complexity_2 Authentication_2 Confidentiality_impact_2 Integrity_impact_2 Availability_impact_2


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