{
  "fix": "KB5002923",
  "url": "https://patchblox.com/security/fix/microsoft/kb5002923",
  "summary": "KB5002923, released September 8, 2026, fixes 30 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "September 2026 security update",
  "released": "2026-09-08T07:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-78509, rated Critical",
  "supported": true,
  "cveCount": 30,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00974,
  "maxCvss": 9.8,
  "vendorAdvisory": "https://support.microsoft.com/help/5002923",
  "appliesTo": [
    {
      "product": "Microsoft Word 2016 (32-bit edition)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-word-2016-32-bit-edition",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft Word 2016 (64-bit edition)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-word-2016-64-bit-edition",
      "fixedVersion": "",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-78509",
      "url": "https://patchblox.com/security/cve/CVE-2026-78509",
      "title": "Microsoft Office Outlook Remote Code Execution Vulnerability",
      "component": "Microsoft Office Outlook",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00974,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78520",
      "url": "https://patchblox.com/security/cve/CVE-2026-78520",
      "title": "Microsoft Office Outlook Information Disclosure Vulnerability",
      "component": "Microsoft Office Outlook",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78525",
      "url": "https://patchblox.com/security/cve/CVE-2026-78525",
      "title": "Microsoft Office Outlook Remote Code Execution Vulnerability",
      "component": "Microsoft Office Outlook",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-69556",
      "url": "https://patchblox.com/security/cve/CVE-2026-69556",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-69671",
      "url": "https://patchblox.com/security/cve/CVE-2026-69671",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-69686",
      "url": "https://patchblox.com/security/cve/CVE-2026-69686",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-69722",
      "url": "https://patchblox.com/security/cve/CVE-2026-69722",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-69759",
      "url": "https://patchblox.com/security/cve/CVE-2026-69759",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-69764",
      "url": "https://patchblox.com/security/cve/CVE-2026-69764",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-72972",
      "url": "https://patchblox.com/security/cve/CVE-2026-72972",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-72973",
      "url": "https://patchblox.com/security/cve/CVE-2026-72973",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-77901",
      "url": "https://patchblox.com/security/cve/CVE-2026-77901",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78504",
      "url": "https://patchblox.com/security/cve/CVE-2026-78504",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78511",
      "url": "https://patchblox.com/security/cve/CVE-2026-78511",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78514",
      "url": "https://patchblox.com/security/cve/CVE-2026-78514",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78517",
      "url": "https://patchblox.com/security/cve/CVE-2026-78517",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78521",
      "url": "https://patchblox.com/security/cve/CVE-2026-78521",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-80080",
      "url": "https://patchblox.com/security/cve/CVE-2026-80080",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-80085",
      "url": "https://patchblox.com/security/cve/CVE-2026-80085",
      "title": "Microsoft Office Word Remote Code Execution Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00819,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-69719",
      "url": "https://patchblox.com/security/cve/CVE-2026-69719",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-77911",
      "url": "https://patchblox.com/security/cve/CVE-2026-77911",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78502",
      "url": "https://patchblox.com/security/cve/CVE-2026-78502",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78503",
      "url": "https://patchblox.com/security/cve/CVE-2026-78503",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78522",
      "url": "https://patchblox.com/security/cve/CVE-2026-78522",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-80079",
      "url": "https://patchblox.com/security/cve/CVE-2026-80079",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-80090",
      "url": "https://patchblox.com/security/cve/CVE-2026-80090",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.00922,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-78506",
      "url": "https://patchblox.com/security/cve/CVE-2026-78506",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.00541,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-83949",
      "url": "https://patchblox.com/security/cve/CVE-2026-83949",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.00541,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-83951",
      "url": "https://patchblox.com/security/cve/CVE-2026-83951",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.00541,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-72976",
      "url": "https://patchblox.com/security/cve/CVE-2026-72976",
      "title": "Microsoft Office Word Information Disclosure Vulnerability",
      "component": "Microsoft Office Word",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5,
      "epss": 0.00512,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}