{
  "cveId": "CVE-2019-0811",
  "url": "https://patchblox.com/security/cve/CVE-2019-0811",
  "summary": "CVE-2019-0811 is fixed in 8 products on 1 platform, first by KB4507460, released July 9, 2019. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Windows DNS Server Denial of Service Vulnerability",
  "description": "\u003Cp\u003EA denial of service vulnerability exists in Windows DNS Server when it fails to properly handle DNS queries. An attacker who successfully exploited this vulnerability could cause the DNS Server service to become nonresponsive.\u003C/p\u003E\n\u003Cp\u003ETo exploit the vulnerability, an unauthenticated attacker could send malicious DNS queries to an affected server, resulting in a denial of service. However, the DNS server must be configured to use DNS Analytical Logging for the attack to succeed.\u003C/p\u003E\n\u003Cp\u003EThe update addresses the vulnerability by correcting how Windows DNS Server processes DNS queries.\u003C/p\u003E",
  "published": "2019-07-09T12:00:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "epss": 0.04502,
  "epssPercentile": 0.91559,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0811",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4507457",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507457",
      "released": "2019-07-09T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4507448",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507448",
      "released": "2019-07-09T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4507457",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507457",
      "released": "2019-07-09T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4507448",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507448",
      "released": "2019-07-09T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016",
      "fixedVersion": "14393.3085",
      "fix": "KB4507460",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507460",
      "released": "2019-07-09T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016 (Server Core installation)",
      "fixedVersion": "14393.3085",
      "fix": "KB4507460",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507460",
      "released": "2019-07-09T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019",
      "fixedVersion": "17763.615",
      "fix": "KB4507469",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507469",
      "released": "2019-07-09T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019 (Server Core installation)",
      "fixedVersion": "17763.615",
      "fix": "KB4507469",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507469",
      "released": "2019-07-09T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1803  (Server Core Installation)",
      "fixedVersion": "17134.885",
      "fix": "KB4507435",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507435",
      "released": "2019-07-09T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1903 (Server Core installation)",
      "fixedVersion": "18362.239",
      "fix": "KB4507453",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507453",
      "released": "2019-07-09T00:00:00Z"
    }
  ],
  "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"
  }
}