{
  "fix": "KB5004951",
  "url": "https://patchblox.com/security/fix/microsoft/kb5004951",
  "summary": "KB5004951, released July 2, 2021, fixes 1 CVE across 2 products. One of them is being exploited (CVE-2021-34527); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "July 2021 security update",
  "released": "2021-07-02T12:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2021-34527, exploited (CISA KEV, ransomware)",
  "supported": false,
  "cveCount": 1,
  "exploitedCveCount": 1,
  "kevCveCount": 1,
  "ransomwareCveCount": 1,
  "maxEpss": 0.99792,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://support.microsoft.com/help/5004951",
  "appliesTo": [
    {
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation",
      "fixedVersion": "",
      "supported": false
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-34527",
      "url": "https://patchblox.com/security/cve/CVE-2021-34527",
      "title": "Windows Print Spooler Remote Code Execution Vulnerability",
      "component": "Windows Print Spooler Components",
      "impact": "Remote Code Execution",
      "priority": "Patch now",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.99792,
      "kev": true,
      "ransomware": true,
      "exploited": true,
      "disclosed": true
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}