{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2011-3402",
  "revision": 1,
  "title": "Windows kernel — font parsing to remote code execution",
  "summary": "The font parsing engine in the Windows kernel drivers runs the attacker's code when it processes crafted font data in a document or a web page. Duqu used it; no weakness class is recorded on the entry.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 8.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.78138,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2025-10-06",
    "prerequisites": "The user must open a document or page carrying the crafted font."
  },
  "remediation": {
    "patch_available": true,
    "workaround_available": true
  },
  "kill_chain": "execution",
  "recommended_action": "Retire these Windows versions — all are out of support; the 2011 update and the font parsing workaround were the only mitigations ever offered.",
  "confidence": "medium",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2011-3402",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2011-3402",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2011-3402",
      "retrieved_at": "2026-09-24T08:51:39.744Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-3402",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx"
    },
    {
      "type": "vendor_advisory",
      "url": "http://secunia.com/advisories/49121"
    },
    {
      "type": "vendor_advisory",
      "url": "http://secunia.com/advisories/49122"
    }
  ],
  "published_at": "2011-11-04T21:55:04.693Z",
  "issued_at": "2026-09-24T08:51:39.744Z",
  "tags": [
    "microsoft",
    "windows",
    "font-parsing",
    "duqu",
    "legacy",
    "kev"
  ]
}