Microsoft Windows null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Microsoft Windows (Operating System) (the affected version unknown). It has been classified as critical. This affects an unknown part. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that triggers a NULL pointer dereference, a different vulnerability than other CVEs listed in MS11-054, aka "Win32k Null Pointer De-reference Vulnerability."

The weakness was released 07/13/2011 by Tarjei Mandt with Norman (Website). The advisory is shared at This vulnerability is uniquely identified as CVE-2011-1880 since 05/04/2011. The exploitability is told to be easy. An attack has to be approached locally. A authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/14/2021).

The vulnerability scanner Nessus provides a plugin with the ID 55570 (MS11-054: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2555917)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90718 (Microsoft Windows Kernel Mode Drivers Elevation of Privilege (MS11-054)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (68306) and Tenable (55570).






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
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Class: Null pointer dereference
CWE: CWE-476 / CWE-404

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍


Nessus ID: 55570
Nessus Name: MS11-054: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2555917)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902538
OpenVAS Name: Windows Kernel-Mode Drivers Privilege Elevation Vulnerabilities (2555917)
OpenVAS File: 🔍
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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


05/04/2011 🔍
07/12/2011 +69 days 🔍
07/12/2011 +0 days 🔍
07/12/2011 +0 days 🔍
07/12/2011 +0 days 🔍
07/13/2011 +1 days 🔍
07/13/2011 +0 days 🔍
07/13/2011 +0 days 🔍
03/23/2015 +1349 days 🔍
11/14/2021 +2428 days 🔍



Researcher: Tarjei Mandt
Organization: Norman
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-1880 (🔍)

X-Force: 68306
SecurityTracker: 1025761 - Windows Kernel-Mode Drivers Let Local Users Gain Elevated Privileges
Vulnerability Center: 32246 - [MS11-054] Microsoft Windows Win32K.SYS \x27NULL Pointer\x27 Local Privilege Escalation (CVE-2011-1880), High
SecurityFocus: 48597 - Microsoft Windows Kernel 'Win32k.sys' (CVE-2011-1880) Local Privilege Escalation Vulnerability
Secunia: 45186 - Microsoft Windows win32k.sys Driver Multiple Vulnerabilities, Less Critical
OSVDB: 73786


Created: 03/23/2015 04:50 PM
Updated: 11/14/2021 10:43 AM
Changes: 03/23/2015 04:50 PM (62), 04/07/2017 04:04 PM (19), 11/14/2021 10:43 AM (3)
Complete: 🔍
Cache ID: 100:01E:40


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