{
  "fix": "KB5002837",
  "url": "https://patchblox.com/security/fix/microsoft/kb5002837",
  "summary": "KB5002837, released February 10, 2026, fixes 3 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "February 2026 security update",
  "released": "2026-02-10T08:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2026-21259, high severity",
  "supported": true,
  "cveCount": 3,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00627,
  "maxCvss": 7.8,
  "vendorAdvisory": "https://support.microsoft.com/help/5002837",
  "appliesTo": [
    {
      "product": "Microsoft Excel 2016 (32-bit edition)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-excel-2016-32-bit-edition",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft Excel 2016 (64-bit edition)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-excel-2016-64-bit-edition",
      "fixedVersion": "",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-21259",
      "url": "https://patchblox.com/security/cve/CVE-2026-21259",
      "title": "Microsoft Excel Elevation of Privilege Vulnerability",
      "component": "Microsoft Office Excel",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00551,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21258",
      "url": "https://patchblox.com/security/cve/CVE-2026-21258",
      "title": "Microsoft Excel Information Disclosure Vulnerability",
      "component": "Microsoft Office Excel",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.00627,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-21261",
      "url": "https://patchblox.com/security/cve/CVE-2026-21261",
      "title": "Microsoft Excel Information Disclosure Vulnerability",
      "component": "Microsoft Office Excel",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.00627,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z"
}