{
  "fix": "KB4618810",
  "url": "https://patchblox.com/security/fix/microsoft/kb4618810",
  "summary": "KB4618810, released October 12, 2021, fixes 3 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "October 2021 security update",
  "released": "2021-10-12T12:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2021-40457, high severity",
  "supported": true,
  "cveCount": 3,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01633,
  "maxCvss": 7.4,
  "vendorAdvisory": "https://support.microsoft.com/help/4618810",
  "appliesTo": [
    {
      "product": "Microsoft Dynamics 365 (on-premises) version 9.1",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-dynamics-365-on-premises-version-9.1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Dynamics 365 Customer Engagement V9.1",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-dynamics-365-customer-engagement-v9.1",
      "fixedVersion": "",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-40457",
      "url": "https://patchblox.com/security/cve/CVE-2021-40457",
      "title": "Microsoft Dynamics 365 Customer Engagement Cross-Site Scripting Vulnerability",
      "component": "Microsoft Dynamics",
      "impact": "Spoofing",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.4,
      "epss": 0.01633,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-41353",
      "url": "https://patchblox.com/security/cve/CVE-2021-41353",
      "title": "Microsoft Dynamics 365 (on-premises) Spoofing Vulnerability",
      "component": "Microsoft Dynamics",
      "impact": "Spoofing",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.4,
      "epss": 0.0095,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-41354",
      "url": "https://patchblox.com/security/cve/CVE-2021-41354",
      "title": "Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability",
      "component": "Microsoft Dynamics",
      "impact": "Spoofing",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.4,
      "epss": 0.0095,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}