{
  "cveId": "CVE-2018-8589",
  "url": "https://patchblox.com/security/cve/CVE-2018-8589",
  "summary": "CVE-2018-8589 is fixed in 10 products on 1 platform, first by KB4467107, released November 13, 2018. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on May 23, 2022. Patch Radar priority: Patch now.",
  "title": "Windows Win32k Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EAn elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys.\u003C/p\u003E\n\u003Cp\u003EAn attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\u003C/p\u003E\n\u003Cp\u003ETo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control over an affected system.\u003C/p\u003E\n\u003Cp\u003EThe update addresses the vulnerability by correcting how Windows handles calls to Win32k.\u003C/p\u003E",
  "published": "2018-11-13T14:00:00Z",
  "severity": "Important",
  "cvss": 7.8,
  "epss": 0.03023,
  "epssPercentile": 0.87538,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": true,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation More Likely",
  "kev": {
    "added": "2022-05-23T00:00:00Z",
    "due": "2022-06-13T00:00:00Z",
    "ransomware": false,
    "requiredAction": "Apply updates per vendor instructions."
  },
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8589",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467107",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467107",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467106",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467106",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467107",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467107",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467106",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467106",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467107",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467107",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467106",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467106",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467107",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467107",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4467106",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467106",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4467107",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467107",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4467106",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467106",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4467706",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467706",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4467700",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467700",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4467706",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467706",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4467700",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467700",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4467706",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467706",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4467700",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467700",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4467706",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467706",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4467700",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467700",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4467706",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467706",
      "released": "2018-11-13T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4467700",
      "url": "https://patchblox.com/security/fix/microsoft/kb4467700",
      "released": "2018-11-13T14:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}