{"id":"CVE-2011-1879","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-1879","generatedAt":"2026-10-27T22:04:28.545Z","title":"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…","description":"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 CVEs listed in MS11-054, aka \"Win32k Use After Free Vulnerability.\"","published":"2011-07-13T23:55:01.000Z","lastModified":"2026-06-16T23:30:18.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"2.0","score":7.2,"severity":"HIGH","vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C"},"cwe":["CWE-399"],"affected":["microsoft/windows 2003 server","microsoft/windows 7","microsoft/windows server 2003","microsoft/windows server 2008","microsoft/windows vista","microsoft/windows xp"],"epss":{"score":0.01405,"percentile":0.72391,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://osvdb.org/73781","source":"secure@microsoft.com"},{"url":"http://secunia.com/advisories/45186","source":"secure@microsoft.com"},{"url":"http://support.avaya.com/css/P8/documents/100144947","source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/48593","source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id?1025761","source":"secure@microsoft.com"},{"url":"http://www.us-cert.gov/cas/techalerts/TA11-193A.html","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-054","source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11946","source":"secure@microsoft.com"},{"url":"http://osvdb.org/73781","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/45186","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.avaya.com/css/P8/documents/100144947","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/48593","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1025761","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA11-193A.html","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-054","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11946","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-1879","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}