{
  "cveId": "CVE-2018-8159",
  "url": "https://patchblox.com/security/cve/CVE-2018-8159",
  "summary": "CVE-2018-8159 is fixed in 4 products on 1 platform, first by KB4092041, released May 8, 2018. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Microsoft Exchange Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EAn elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests. An attacker who successfully exploited this vulnerability could perform script/content injection attacks and attempt to trick the user into disclosing sensitive information.\u003C/p\u003E\n\u003Cp\u003ETo exploit the vulnerability, an attacker could send a specially crafted email message containing a specific malicious script. The user would have to apply a highlight to the script for it to be activated.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how Microsoft Exchange validates web requests.\u003C/p\u003E",
  "published": "2018-05-08T07:00:00Z",
  "severity": "Important",
  "epss": 0.03512,
  "epssPercentile": 0.89259,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8159",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2013 Cumulative Update 19",
      "fixedVersion": "",
      "fix": "KB4092041",
      "url": "https://patchblox.com/security/fix/microsoft/kb4092041",
      "released": "2018-05-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2013 Cumulative Update 20",
      "fixedVersion": "",
      "fix": "KB4092041",
      "url": "https://patchblox.com/security/fix/microsoft/kb4092041",
      "released": "2018-05-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2016 Cumulative Update 8",
      "fixedVersion": "",
      "fix": "KB4092041",
      "url": "https://patchblox.com/security/fix/microsoft/kb4092041",
      "released": "2018-05-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2016 Cumulative Update 9",
      "fixedVersion": "",
      "fix": "KB4092041",
      "url": "https://patchblox.com/security/fix/microsoft/kb4092041",
      "released": "2018-05-08T07:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T12:40:37Z"
}