{
  "fix": "KB5002819",
  "url": "https://patchblox.com/security/fix/microsoft/kb5002819",
  "summary": "KB5002819, released December 17, 2025, fixes 2 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "December 2025 security update",
  "released": "2025-12-17T14:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2025-62554, rated Critical",
  "supported": true,
  "cveCount": 2,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00434,
  "maxCvss": 8.4,
  "vendorAdvisory": "https://support.microsoft.com/help/5002819",
  "appliesTo": [
    {
      "product": "Microsoft Office 2016 (32-bit edition)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-office-2016-32-bit-edition",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft Office 2016 (64-bit edition)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-office-2016-64-bit-edition",
      "fixedVersion": "",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2025-62554",
      "url": "https://patchblox.com/security/cve/CVE-2025-62554",
      "title": "Microsoft Office Remote Code Execution Vulnerability",
      "component": "Microsoft Office",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.4,
      "epss": 0.00434,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-62557",
      "url": "https://patchblox.com/security/cve/CVE-2025-62557",
      "title": "Microsoft Office Remote Code Execution Vulnerability",
      "component": "Microsoft Office",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.4,
      "epss": 0.00425,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z"
}