{
  "cveId": "CVE-2026-69304",
  "url": "https://patchblox.com/security/cve/CVE-2026-69304",
  "summary": "CVE-2026-69304 is fixed in 12 products on 2 platforms, first by Microsoft ASP.NET Core Hosting Bundle 9.0 9.0.20, released August 14, 2026. 3 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "ASP.NET Core Denial of Service Vulnerability",
  "description": "\u003Cp\u003EImproper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.\u003C/p\u003E",
  "published": "2026-09-08T07:00:00Z",
  "severity": "Important",
  "cvss": 5.9,
  "cwe": "Improper Handling of Highly Compressed Data (Data Amplification)",
  "epss": 0.00855,
  "epssPercentile": 0.58575,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69304",
  "fixes": [
    {
      "platform": "microsoft",
      "product": ".NET 10.0 runtime installed on Windows",
      "fixedVersion": "",
      "fix": "KB5126106",
      "url": "https://patchblox.com/security/fix/microsoft/kb5126106",
      "released": "2026-09-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": ".NET 8.0 runtime installed on Windows",
      "fixedVersion": "",
      "fix": "KB5126104",
      "url": "https://patchblox.com/security/fix/microsoft/kb5126104",
      "released": "2026-09-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": ".NET 9.0 runtime installed on Windows",
      "fixedVersion": "",
      "fix": "KB5126105",
      "url": "https://patchblox.com/security/fix/microsoft/kb5126105",
      "released": "2026-09-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "ASP.NET Core 10.0",
      "fixedVersion": "",
      "fix": "KB5126106",
      "url": "https://patchblox.com/security/fix/microsoft/kb5126106",
      "released": "2026-09-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "ASP.NET Core 8.0",
      "fixedVersion": "",
      "fix": "KB5126104",
      "url": "https://patchblox.com/security/fix/microsoft/kb5126104",
      "released": "2026-09-08T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "ASP.NET Core 9.0",
      "fixedVersion": "",
      "fix": "KB5126105",
      "url": "https://patchblox.com/security/fix/microsoft/kb5126105",
      "released": "2026-09-08T07:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft .NET Windows Desktop Runtime 10.0",
      "fixedVersion": "10.0.12",
      "fix": "Microsoft .NET Windows Desktop Runtime 10.0 10.0.12",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.dotnet.desktopruntime.10-10.0.12",
      "released": "2026-08-22T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft .NET Windows Desktop Runtime 8.0",
      "fixedVersion": "8.0.31",
      "fix": "Microsoft .NET Windows Desktop Runtime 8.0 8.0.31",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.dotnet.desktopruntime.8-8.0.31",
      "released": "2026-08-22T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft .NET Windows Desktop Runtime 9.0",
      "fixedVersion": "9.0.20",
      "fix": "Microsoft .NET Windows Desktop Runtime 9.0 9.0.20",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.dotnet.desktopruntime.9-9.0.20",
      "released": "2026-08-21T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft ASP.NET Core Hosting Bundle 10.0",
      "fixedVersion": "10.0.12",
      "fix": "Microsoft ASP.NET Core Hosting Bundle 10.0 10.0.12",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.dotnet.hostingbundle.10-10.0.12",
      "released": "2026-08-22T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft ASP.NET Core Hosting Bundle 8.0",
      "fixedVersion": "8.0.31",
      "fix": "Microsoft ASP.NET Core Hosting Bundle 8.0 8.0.31",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.dotnet.hostingbundle.8-8.0.31",
      "released": "2026-08-22T00:00:00Z"
    },
    {
      "platform": "windows-app",
      "product": "Microsoft ASP.NET Core Hosting Bundle 9.0",
      "fixedVersion": "9.0.20",
      "fix": "Microsoft ASP.NET Core Hosting Bundle 9.0 9.0.20",
      "url": "https://patchblox.com/security/fix/windows-app/microsoft.dotnet.hostingbundle.9-9.0.20",
      "released": "2026-08-14T00:00:00Z"
    }
  ],
  "noFixYet": [
    {
      "platform": "Windows apps",
      "product": "Microsoft Windows Desktop Runtime - 8.0.25 (arm64)",
      "status": "no-fix",
      "affectedVersion": "8.0.25"
    },
    {
      "platform": "Windows apps",
      "product": "Microsoft Windows Desktop Runtime - 8.0.25 (x64)",
      "status": "no-fix",
      "affectedVersion": "8.0.25"
    },
    {
      "platform": "Windows apps",
      "product": "Microsoft Windows Desktop Runtime - 8.0.25 (x86)",
      "status": "no-fix",
      "affectedVersion": "8.0.25"
    }
  ],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}