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

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Microsoft Windows up to XP. This impacts an unknown function of the file win32k.sys of the component Kernel Mode Driver Handler. The manipulation as part of Object leads to memory corruption (Memory). This vulnerability is uniquely identified as CVE-2014-0300. Local access is required to approach this attack. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows up to XP (Operating System). It has been rated as critical. This issue affects an unknown code of the file win32k.sys of the component Kernel Mode Driver Handler. The manipulation as part of a Object leads to a memory corruption vulnerability (Memory). Using CWE to declare the problem leads to 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. Impacted is 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 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

The weakness was disclosed 03/11/2014 with Microsoft as MS14-015 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The public release has been coordinated in cooperation with Microsoft. The identification of this vulnerability is CVE-2014-0300 since 12/03/2013. The exploitation is known to be easy. Attacking locally is a requirement. A simple authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/07/2026).

The vulnerability scanner Nessus provides a plugin with the ID 72934 (MS14-015: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (2930275)), 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 90945 (Microsoft Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability (MS14-015)).

Applying the patch MS14-015 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (91360), Tenable (72934), SecurityFocus (BID 66003†), Secunia (SA57330†) and Vulnerability Center (SBV-43557†). zdnet.com is providing further details. The entries VDB-12526, VDB-12528, VDB-12529 and VDB-12530 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Name: Memory
Class: Memory corruption / Memory
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72934
Nessus Name: MS14-015: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (2930275)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 804409
OpenVAS Name: Microsoft Windows Kernel Privilege Escalation Vulnerabilities (2930275)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS14-015

Timelineinfo

12/03/2013 🔍
03/11/2014 +98 days 🔍
03/11/2014 +0 days 🔍
03/11/2014 +0 days 🔍
03/11/2014 +0 days 🔍
03/11/2014 +0 days 🔍
03/12/2014 +1 days 🔍
03/12/2014 +0 days 🔍
03/12/2014 +0 days 🔍
05/07/2026 +4439 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS14-015
Organization: Microsoft
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2014-0300 (🔍)
GCVE (CVE): GCVE-0-2014-0300
GCVE (VulDB): GCVE-100-12527

OVAL: 🔍
IAVM: 🔍

X-Force: 91360 - Microsoft kernel mode driver (win32k.sys) privilege escalation, Medium Risk
SecurityFocus: 66003 - Microsoft Windows Kernel 'Win32k.sys' CVE-2014-0300 Local Privilege Escalation Vulnerability
Secunia: 57330
Vulnerability Center: 43557 - [MS14-015] Microsoft Windows Kernel-Mode Driver Local Privileges Escalation Vulnerability - CVE-2014-0300, High

scip Labs: https://www.scip.ch/en/?labs.20140213
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 03/12/2014 14:42
Updated: 05/07/2026 18:00
Changes: 03/12/2014 14:42 (86), 04/07/2017 15:13 (6), 06/15/2021 11:32 (3), 05/07/2026 18:00 (15)
Complete: 🔍
Cache ID: 216::103

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