{
  "fix": "KB4340731",
  "url": "https://patchblox.com/security/fix/microsoft/kb4340731",
  "summary": "KB4340731, released August 14, 2018, fixes 2 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "August 2018 security update",
  "released": "2018-08-14T07:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2018-8302, rated Critical",
  "supported": false,
  "cveCount": 2,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.2707,
  "vendorAdvisory": "https://support.microsoft.com/help/4340731",
  "appliesTo": [
    {
      "product": "Microsoft Exchange Server 2013 Cumulative Update 20",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-exchange-server-2013-cumulative-update-20",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Exchange Server 2013 Cumulative Update 21",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-exchange-server-2013-cumulative-update-21",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Exchange Server 2016 Cumulative Update 10",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-exchange-server-2016-cumulative-update-10",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Exchange Server 2016 Cumulative Update 9",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-exchange-server-2016-cumulative-update-9",
      "fixedVersion": "",
      "supported": false
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2018-8302",
      "url": "https://patchblox.com/security/cve/CVE-2018-8302",
      "title": "Microsoft Exchange Memory Corruption Vulnerability",
      "component": "Microsoft Exchange Server",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "epss": 0.2707,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8374",
      "url": "https://patchblox.com/security/cve/CVE-2018-8374",
      "title": "Microsoft Exchange Server Tampering Vulnerability",
      "component": "Microsoft Exchange Server",
      "impact": "Tampering",
      "priority": "Routine",
      "severity": "Moderate",
      "epss": 0.0327,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z"
}