{
  "cveId": "CVE-2020-1391",
  "url": "https://patchblox.com/security/cve/CVE-2020-1391",
  "summary": "CVE-2020-1391 is fixed in 12 products on 1 platform, first by KB4565483, released July 14, 2020. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Windows Agent Activation Runtime Information Disclosure Vulnerability",
  "description": "\u003Cp\u003EAn information disclosure vulnerability exists when the Windows Agent Activation Runtime (AarSvc) fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user\u2019s system.\u003C/p\u003E\n\u003Cp\u003ETo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application.\u003C/p\u003E\n\u003Cp\u003EThe update addresses the vulnerability by correcting how the Windows Agent Activation Runtime handles objects in memory.\u003C/p\u003E",
  "published": "2020-07-14T12:00:00Z",
  "severity": "Important",
  "cvss": 5.5,
  "epss": 0.01307,
  "epssPercentile": 0.70742,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1391",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for 32-bit Systems",
      "fixedVersion": "19041.388",
      "fix": "KB4565503",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565503",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for ARM64-based Systems",
      "fixedVersion": "19041.388",
      "fix": "KB4565503",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565503",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for x64-based Systems",
      "fixedVersion": "19041.388",
      "fix": "KB4565503",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565503",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1903 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1909 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4565483",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565483",
      "released": "2020-07-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 2004 (Server Core installation)",
      "fixedVersion": "19041.388",
      "fix": "KB4565503",
      "url": "https://patchblox.com/security/fix/microsoft/kb4565503",
      "released": "2020-07-14T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}