{
  "fix": "KB5097148",
  "url": "https://patchblox.com/security/fix/microsoft/kb5097148",
  "summary": "KB5097148, released June 9, 2026, fixes 3 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "June 2026 security update",
  "released": "2026-06-09T07:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2026-45591, high severity",
  "supported": true,
  "cveCount": 3,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.02481,
  "maxCvss": 7.8,
  "vendorAdvisory": "https://support.microsoft.com/help/5097148",
  "appliesTo": [
    {
      "product": ".NET 10.0 runtime installed on Linux",
      "productUrl": "https://patchblox.com/security/product/microsoft/net-10.0-runtime-installed-on-linux",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": ".NET 10.0 runtime installed on Mac OS",
      "productUrl": "https://patchblox.com/security/product/microsoft/net-10.0-runtime-installed-on-mac-os",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": ".NET 10.0 runtime installed on Windows",
      "productUrl": "https://patchblox.com/security/product/microsoft/net-10.0-runtime-installed-on-windows",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "ASP.NET Core 10.0",
      "productUrl": "https://patchblox.com/security/product/microsoft/asp.net-core-10.0",
      "fixedVersion": "",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-45591",
      "url": "https://patchblox.com/security/cve/CVE-2026-45591",
      "title": "ASP.NET Core Denial of Service Vulnerability",
      "component": "ASP.NET Core",
      "impact": "Denial of Service",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.02481,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-45491",
      "url": "https://patchblox.com/security/cve/CVE-2026-45491",
      "title": ".NET Tampering Vulnerability",
      "component": ".NET",
      "impact": "Tampering",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00388,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-45490",
      "url": "https://patchblox.com/security/cve/CVE-2026-45490",
      "title": ".NET SDK Elevation of Privilege Vulnerability",
      "component": ".NET",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00384,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}