{
  "cveId": "CVE-2021-27091",
  "url": "https://patchblox.com/security/cve/CVE-2021-27091",
  "summary": "CVE-2021-27091 is fixed in 6 products on 1 platform, first by KB5001335, released April 13, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "RPC Endpoint Mapper Service Elevation of Privilege Vulnerability",
  "description": "",
  "published": "2021-04-13T12:00:00Z",
  "severity": "Important",
  "cvss": 7.8,
  "epss": 0.00594,
  "epssPercentile": 0.48678,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": true,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27091",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5001335",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001335",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5001392",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001392",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5001335",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001335",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5001392",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001392",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5001335",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001335",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5001392",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001392",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB5001335",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001335",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB5001392",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001392",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB5001387",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001387",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB5001383",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001383",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB5001387",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001387",
      "released": "2021-04-13T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB5001383",
      "url": "https://patchblox.com/security/fix/microsoft/kb5001383",
      "released": "2021-04-13T12:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}