{
  "cveId": "CVE-2019-0586",
  "url": "https://patchblox.com/security/cve/CVE-2019-0586",
  "summary": "CVE-2019-0586 is fixed in 3 products on 1 platform, first by KB4471389, released January 8, 2019. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.",
  "title": "Microsoft Exchange Memory Corruption Vulnerability",
  "description": "\u003Cp\u003EA remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the System user. An attacker could then install programs; view, change, or delete data; or create new accounts.\u003C/p\u003E\n\u003Cp\u003EExploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Exchange server.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how Microsoft Exchange handles objects in memory.\u003C/p\u003E",
  "published": "2019-01-08T08:00:00Z",
  "severity": "Important",
  "epss": 0.15396,
  "epssPercentile": 0.96804,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation More Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0586",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2016 Cumulative Update 10",
      "fixedVersion": "",
      "fix": "KB4471389",
      "url": "https://patchblox.com/security/fix/microsoft/kb4471389",
      "released": "2019-01-08T08:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2016 Cumulative Update 11",
      "fixedVersion": "",
      "fix": "KB4471389",
      "url": "https://patchblox.com/security/fix/microsoft/kb4471389",
      "released": "2019-01-08T08:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft Exchange Server 2019",
      "fixedVersion": "",
      "fix": "KB4471389",
      "url": "https://patchblox.com/security/fix/microsoft/kb4471389",
      "released": "2019-01-08T08:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}