Vulnerability Monitor

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CVE-2011-0671

Use-after-free vulnerability in 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 leverages incorrect driver object management, a different vulnerability than other "Vulnerability Type 1" CVEs listed in MS11-034, aka "Win32k Use After Free Vulnerability."

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.4, requiring local system access to exploit with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 6 products from microsoft, from microsoft, from microsoft and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-04-13T20:26:24.580

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 8.4 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-399
Type: Secondary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	microsoft	windows_2003_server	*	Yes
Operating System	microsoft	windows_7	-	Yes
Operating System	microsoft	windows_7	-	Yes
Operating System	microsoft	windows_7	-	Yes
Operating System	microsoft	windows_server_2003	*	Yes
Operating System	microsoft	windows_server_2008	*	Yes
Operating System	microsoft	windows_server_2008	*	Yes
Operating System	microsoft	windows_server_2008	*	Yes
Operating System	microsoft	windows_server_2008	*	Yes
Operating System	microsoft	windows_server_2008	*	Yes
Operating System	microsoft	windows_server_2008	-	Yes
Operating System	microsoft	windows_server_2008	r2	Yes
Operating System	microsoft	windows_server_2008	r2	Yes
Operating System	microsoft	windows_vista	*	Yes
Operating System	microsoft	windows_vista	*	Yes
Operating System	microsoft	windows_xp	*	Yes
Operating System	microsoft	windows_xp	-	Yes

References

http://blogs.technet.com/b/srd/archive/2011/04/12/ms11-034-addressing-vulnerabilities-in-the-win32k-subsystem.aspx ([email protected])
http://osvdb.org/71745 ([email protected])
http://secunia.com/advisories/44156 ([email protected])
http://support.avaya.com/css/P8/documents/100133352 ([email protected])
http://www.securityfocus.com/bid/47206 ([email protected])
http://www.securitytracker.com/id?1025345 ([email protected])
http://www.us-cert.gov/cas/techalerts/TA11-102A.html US Government Resource ([email protected])
http://www.vupen.com/english/advisories/2011/0952 ([email protected])
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-034 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/66400 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11942 ([email protected])
http://blogs.technet.com/b/srd/archive/2011/04/12/ms11-034-addressing-vulnerabilities-in-the-win32k-subsystem.aspx (af854a3a-2127-422b-91ae-364da2661108)
http://osvdb.org/71745 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/44156 (af854a3a-2127-422b-91ae-364da2661108)
http://support.avaya.com/css/P8/documents/100133352 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/47206 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1025345 (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/cas/techalerts/TA11-102A.html US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2011/0952 (af854a3a-2127-422b-91ae-364da2661108)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-034 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/66400 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11942 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For microsoft's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.