CVE-2011-2011

no score yetEPSS 1.8%

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 SP2, Windows Server 2008 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, aka "Win32k Use After Free Vulnerability."

EPSS: 1.8% chance of exploitation in the next 30 days; higher than 78% of CVEs (scores of 2026-10-31)
CWE: CWE-399
Published: 2011-10-12
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

microsoft:windows_2003_server
microsoft:windows_7
microsoft:windows_server_2003
microsoft:windows_server_2008
microsoft:windows_vista
microsoft:windows_xp

References

http://www.securityfocus.com/bid/49981
http://www.securitytracker.com/id?1026165
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12904
http://www.securityfocus.com/bid/49981

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