{
  "cveId": "CVE-2020-16875",
  "url": "https://patchblox.com/security/cve/CVE-2020-16875",
  "summary": "CVE-2020-16875 is fixed in 4 products on 1 platform, first by KB4577352, released September 8, 2020. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "Microsoft Exchange Server Remote Code Execution Vulnerability",
  "description": "\u003Cp\u003EA remote code execution vulnerability exists in Microsoft Exchange server due to improper validation of cmdlet arguments.\u003C/p\u003E\n\u003Cp\u003EAn attacker who successfully exploited the vulnerability could run arbitrary code in the context of the System user. Exploitation of the vulnerability requires an authenticated user in a certain Exchange role to be compromised.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how Microsoft Exchange handles cmdlet arguments.\u003C/p\u003E",
  "published": "2020-09-08T12:00:00Z",
  "severity": "Critical",
  "cvss": 8.4,
  "epss": 0.46497,
  "epssPercentile": 0.98827,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-16875",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2016 Cumulative Update 16",
      "fixedVersion": "",
      "fix": "KB4577352",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577352",
      "released": "2020-09-08T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2016 Cumulative Update 17",
      "fixedVersion": "",
      "fix": "KB4577352",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577352",
      "released": "2020-09-08T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2019 Cumulative Update 5",
      "fixedVersion": "",
      "fix": "KB4577352",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577352",
      "released": "2020-09-08T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2019 Cumulative Update 6",
      "fixedVersion": "",
      "fix": "KB4577352",
      "url": "https://patchblox.com/security/fix/microsoft/kb4577352",
      "released": "2020-09-08T12:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}