Microsoft Windows up to XP Memory Object win32k.sys memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical was found in Microsoft Windows up to XP (Operating System). Affected by this vulnerability is an unknown code block of the file win32k.sys of the component Memory Object Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect 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 SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows Server 2012, and Windows RT allows local users to gain privileges via a crafted application, aka "Win32k Multiple Fetch Vulnerability," a different vulnerability than CVE-2013-1342, CVE-2013-1343, CVE-2013-1344, and CVE-2013-3864.

The weakness was published 09/10/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as MS13-076 as confirmed bulletin (Technet). The advisory is shared at The public release has been coordinated with Microsoft. This vulnerability is known as CVE-2013-3865 since 06/03/2013. An attack has to be approached locally. The requirement for exploitation is a single authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/24/2021).

The vulnerability scanner Nessus provides a plugin with the ID 69835 (MS13-076: Vulnerabilities in Kernel-Mode Drivers Could Allow Elevation of Privilege (2876315)), 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 90907 (Microsoft Windows Kernel-Mode Drivers Elevation of Privilege (MS13-076)).

Applying the patch MS13-076 is able to eliminate this problem. The bugfix is ready for download at A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (69835). Additional details are provided at








  • end of life (old version)

CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
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Class: Memory corruption
CWE: CWE-119

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Nessus ID: 69835
Nessus Name: MS13-076: Vulnerabilities in Kernel-Mode Drivers Could Allow Elevation of Privilege (2876315)
Nessus File: 🔍
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OpenVAS ID: 902994
OpenVAS Name: MS Windows Kernel-Mode Drivers Privilege Elevation Vulnerabilities (2876315)
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Patch
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Patch: MS13-076


06/03/2013 🔍
09/10/2013 +99 days 🔍
09/10/2013 +0 days 🔍
09/10/2013 +0 days 🔍
09/10/2013 +0 days 🔍
09/11/2013 +1 days 🔍
09/11/2013 +0 days 🔍
09/11/2013 +0 days 🔍
05/24/2021 +2812 days 🔍



Advisory: MS13-076
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-3865 (🔍)

Vulnerability Center: 41450 - [MS13-076] Microsoft Multiple Windows Local Elevation of Privilege Vulnerability (CVE-2013-3865), High
SecurityFocus: 62198
Secunia: 54743 - Microsoft Windows win32k.sys Multiple Vulnerabilities, Less Critical
OSVDB: 97107 - Microsoft Windows Win32k.sys Memory Object Handling Unspecified Local Privilege Escalation (2013-3865)

scip Labs:
Misc.: 🔍


Created: 09/11/2013 02:33 PM
Updated: 05/24/2021 01:36 PM
Changes: 09/11/2013 02:33 PM (55), 08/19/2018 08:02 PM (29), 05/24/2021 01:30 PM (8), 05/24/2021 01:36 PM (1)
Complete: 🔍
Cache ID: 34:70F:40


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