{"id":"CVE-2011-3402","published":"2011-11-04T21:55:04Z","modified":"2026-06-16T23:33:14Z","title":"Microsoft Windows Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"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.\"","provenance":"source","from":"NVD"},"summary":{"text":"A flaw in the TrueType font parsing engine in win32k.sys, the kernel-mode driver component of Microsoft Windows (including XP SP2/SP3, Server 2003 SP2, Vista SP2, Server 2008 SP2/R2/R2 SP1, and Windows 7 Gold/SP1), lets attackers run arbitrary code via crafted font data embedded in a Word document or web page. Exploitation requires only network access with no authentication, but the victim must take an action such as opening the document or visiting the page.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:12:28Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.78138,"percentile":0.99575,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2025-10-06","dueDate":"2025-10-27","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087 ; 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