{"id":"CVE-2011-3402","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-3402","generatedAt":"2026-10-31T23:39:53.196Z","title":"Microsoft Windows Remote Code Execution Vulnerability","description":"Unspecified vulnerability in the TrueType font parsing engine 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 remote attackers to execute arbitrary code via crafted font data in a Word document or web page, as exploited in the wild in November 2011 by Duqu, aka \"TrueType Font Parsing Vulnerability.\"","published":"2011-11-04T21:55:05.000Z","lastModified":"2026-06-16T23:33:14.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["microsoft/windows 7","microsoft/windows server 2003","microsoft/windows server 2008","microsoft/windows vista","microsoft/windows xp"],"epss":{"score":0.78138,"percentile":0.99577,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2025-10-06","dueDate":"2025-10-27","knownRansomwareCampaignUse":"Unknown","notes":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.\nhttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087 ; https://nvd.nist.gov/vuln/detail/CVE-2011-3402"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 27 October 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://blogs.mcafee.com/mcafee-labs/the-day-of-the-golden-jackal-%E2%80%93-further-tales-of-the-stuxnet-files","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://isc.sans.edu/diary/Duqu+Mitigation/11950","tags":["Third Party Advisory"],"source":"secure@microsoft.com"},{"url":"http://secunia.com/advisories/49121","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://secunia.com/advisories/49122","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://technet.microsoft.com/security/advisory/2639658","tags":["Vendor 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Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13998","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15290","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15645","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-3402","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-3402","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."}