{
  "fix": "KB4011580",
  "url": "https://patchblox.com/security/fix/microsoft/kb4011580",
  "summary": "KB4011580, released January 9, 2018, fixes 4 CVEs across 5 products. 2 of them are being exploited (CVE-2018-0798); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "January 2018 security update",
  "released": "2018-01-09T08:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2018-0798, exploited (CISA KEV)",
  "supported": false,
  "cveCount": 4,
  "exploitedCveCount": 2,
  "kevCveCount": 2,
  "ransomwareCveCount": 1,
  "maxEpss": 0.95121,
  "vendorAdvisory": "https://support.microsoft.com/help/4011580",
  "appliesTo": [
    {
      "product": "Microsoft Office 2013 Service Pack 1 (32-bit editions)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-office-2013-service-pack-1-32-bit-editions",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Office 2013 Service Pack 1 (64-bit editions)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-office-2013-service-pack-1-64-bit-editions",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Word 2013 RT Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-word-2013-rt-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Word 2013 Service Pack 1 (32-bit editions)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-word-2013-service-pack-1-32-bit-editions",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Word 2013 Service Pack 1 (64-bit editions)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-word-2013-service-pack-1-64-bit-editions",
      "fixedVersion": "",
      "supported": false
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2018-0798",
      "url": "https://patchblox.com/security/cve/CVE-2018-0798",
      "title": "Microsoft Office Memory Corruption Vulnerability",
      "component": "Microsoft Office",
      "impact": "Remote Code Execution",
      "priority": "Patch now",
      "severity": "Important",
      "epss": 0.95121,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-0802",
      "url": "https://patchblox.com/security/cve/CVE-2018-0802",
      "title": "Microsoft Office Memory Corruption Vulnerability",
      "component": "Microsoft Office",
      "impact": "Remote Code Execution",
      "priority": "Patch now",
      "severity": "Important",
      "epss": 0.93289,
      "kev": true,
      "ransomware": true,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-0812",
      "url": "https://patchblox.com/security/cve/CVE-2018-0812",
      "title": "Microsoft Office Memory Corruption Vulnerability",
      "component": "Microsoft Office",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "epss": 0.24662,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-0801",
      "url": "https://patchblox.com/security/cve/CVE-2018-0801",
      "title": "Microsoft Office Memory Corruption Vulnerability",
      "component": "Microsoft Office",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "epss": 0.24398,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}