{
  "cveId": "CVE-2021-28450",
  "url": "https://patchblox.com/security/cve/CVE-2021-28450",
  "summary": "CVE-2021-28450 is fixed in 4 products on 1 platform, first by KB4493170, released April 13, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Microsoft SharePoint Denial of Service Update",
  "description": "",
  "published": "2021-04-13T12:00:00Z",
  "severity": "Important",
  "cvss": 5,
  "epss": 0.02559,
  "epssPercentile": 0.85193,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28450",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Enterprise Server 2013 Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4493170",
      "url": "https://patchblox.com/security/fix/microsoft/kb4493170",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Enterprise Server 2016",
      "fixedVersion": "",
      "fix": "KB4504719",
      "url": "https://patchblox.com/security/fix/microsoft/kb4504719",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Foundation 2010 Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4504709",
      "url": "https://patchblox.com/security/fix/microsoft/kb4504709",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Server 2019",
      "fixedVersion": "",
      "fix": "KB4504716",
      "url": "https://patchblox.com/security/fix/microsoft/kb4504716",
      "released": "2021-04-13T12:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}