{
  "product": "Microsoft .NET Framework 3.5 on Windows Server 2012 R2",
  "url": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-on-windows-server-2012-r2",
  "summary": "Patch Radar has 64 security fixes for Microsoft .NET Framework 3.5 on Windows Server 2012 R2, closing 95 CVEs, 4 of which are being exploited. The newest security fix is KB5127664, released October 13, 2026.",
  "platform": "microsoft",
  "vendor": "Microsoft",
  "supported": true,
  "fixCount": 64,
  "cveCount": 95,
  "exploitedCveCount": 4,
  "unfixedCveCount": 0,
  "fixes": [
    {
      "fix": "KB5127664",
      "url": "https://patchblox.com/security/fix/microsoft/kb5127664",
      "released": "2026-10-13T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 17,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5120695",
      "url": "https://patchblox.com/security/fix/microsoft/kb5120695",
      "released": "2026-08-11T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 3,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5100985",
      "url": "https://patchblox.com/security/fix/microsoft/kb5100985",
      "released": "2026-07-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 11,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5087049",
      "url": "https://patchblox.com/security/fix/microsoft/kb5087049",
      "released": "2026-05-18T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5082406",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082406",
      "released": "2026-04-15T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5082398",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082398",
      "released": "2026-04-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 3,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5066741",
      "url": "https://patchblox.com/security/fix/microsoft/kb5066741",
      "released": "2025-10-14T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5044097",
      "url": "https://patchblox.com/security/fix/microsoft/kb5044097",
      "released": "2024-10-23T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5041022",
      "url": "https://patchblox.com/security/fix/microsoft/kb5041022",
      "released": "2024-07-09T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5034279",
      "url": "https://patchblox.com/security/fix/microsoft/kb5034279",
      "released": "2024-05-08T12:00:00Z",
      "fixedVersion": "",
      "priority": "Patch now",
      "cveCount": 4,
      "exploitedCveCount": 1
    },
    {
      "fix": "KB5030184",
      "url": "https://patchblox.com/security/fix/microsoft/kb5030184",
      "released": "2023-12-12T14:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 5,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5032343",
      "url": "https://patchblox.com/security/fix/microsoft/kb5032343",
      "released": "2023-11-14T14:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5027533",
      "url": "https://patchblox.com/security/fix/microsoft/kb5027533",
      "released": "2023-06-13T12:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 6,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5027542",
      "url": "https://patchblox.com/security/fix/microsoft/kb5027542",
      "released": "2023-06-13T12:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 6,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5022733",
      "url": "https://patchblox.com/security/fix/microsoft/kb5022733",
      "released": "2023-02-14T14:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5022785",
      "url": "https://patchblox.com/security/fix/microsoft/kb5022785",
      "released": "2023-02-14T14:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5021081",
      "url": "https://patchblox.com/security/fix/microsoft/kb5021081",
      "released": "2022-12-13T14:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5021093",
      "url": "https://patchblox.com/security/fix/microsoft/kb5021093",
      "released": "2022-12-13T14:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5012326",
      "url": "https://patchblox.com/security/fix/microsoft/kb5012326",
      "released": "2022-04-19T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5016568",
      "url": "https://patchblox.com/security/fix/microsoft/kb5016568",
      "released": "2022-04-19T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5009713",
      "url": "https://patchblox.com/security/fix/microsoft/kb5009713",
      "released": "2022-01-11T14:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5009721",
      "url": "https://patchblox.com/security/fix/microsoft/kb5009721",
      "released": "2022-01-11T14:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4566468",
      "url": "https://patchblox.com/security/fix/microsoft/kb4566468",
      "released": "2020-10-13T12:00:00Z",
      "fixedVersion": "",
      "priority": "Patch now",
      "cveCount": 1,
      "exploitedCveCount": 1
    },
    {
      "fix": "KB4579979",
      "url": "https://patchblox.com/security/fix/microsoft/kb4579979",
      "released": "2020-10-13T07:00:00Z",
      "fixedVersion": "",
      "priority": "Patch now",
      "cveCount": 2,
      "exploitedCveCount": 1
    },
    {
      "fix": "KB4580469",
      "url": "https://patchblox.com/security/fix/microsoft/kb4580469",
      "released": "2020-10-13T07:00:00Z",
      "fixedVersion": "",
      "priority": "Routine",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4570502",
      "url": "https://patchblox.com/security/fix/microsoft/kb4570502",
      "released": "2020-08-11T12:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4570508",
      "url": "https://patchblox.com/security/fix/microsoft/kb4570508",
      "released": "2020-08-11T12:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4556401",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556401",
      "released": "2020-05-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4556405",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556405",
      "released": "2020-05-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4534978",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534978",
      "released": "2020-01-14T08:00:00Z",
      "fixedVersion": "",
      "priority": "Patch now",
      "cveCount": 3,
      "exploitedCveCount": 1
    },
    {
      "fix": "KB4535104",
      "url": "https://patchblox.com/security/fix/microsoft/kb4535104",
      "released": "2020-01-14T08:00:00Z",
      "fixedVersion": "",
      "priority": "Patch now",
      "cveCount": 3,
      "exploitedCveCount": 1
    },
    {
      "fix": "KB4514599",
      "url": "https://patchblox.com/security/fix/microsoft/kb4514599",
      "released": "2019-09-10T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4514604",
      "url": "https://patchblox.com/security/fix/microsoft/kb4514604",
      "released": "2019-09-10T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4507413",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507413",
      "released": "2019-07-09T12:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 3,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4507422",
      "url": "https://patchblox.com/security/fix/microsoft/kb4507422",
      "released": "2019-07-09T12:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 3,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4498963",
      "url": "https://patchblox.com/security/fix/microsoft/kb4498963",
      "released": "2019-05-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 4,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4499408",
      "url": "https://patchblox.com/security/fix/microsoft/kb4499408",
      "released": "2019-05-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 4,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4483450",
      "url": "https://patchblox.com/security/fix/microsoft/kb4483450",
      "released": "2019-02-12T08:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4487123",
      "url": "https://patchblox.com/security/fix/microsoft/kb4487123",
      "released": "2019-02-12T08:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4481484",
      "url": "https://patchblox.com/security/fix/microsoft/kb4481484",
      "released": "2019-01-08T08:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4481485",
      "url": "https://patchblox.com/security/fix/microsoft/kb4481485",
      "released": "2019-01-08T08:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4470602",
      "url": "https://patchblox.com/security/fix/microsoft/kb4470602",
      "released": "2018-12-11T08:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4470630",
      "url": "https://patchblox.com/security/fix/microsoft/kb4470630",
      "released": "2018-12-11T08:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4457045",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457045",
      "released": "2018-09-12T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4457056",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457056",
      "released": "2018-09-12T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4344153",
      "url": "https://patchblox.com/security/fix/microsoft/kb4344153",
      "released": "2018-08-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4344178",
      "url": "https://patchblox.com/security/fix/microsoft/kb4344178",
      "released": "2018-08-14T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4338424",
      "url": "https://patchblox.com/security/fix/microsoft/kb4338424",
      "released": "2018-07-10T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4338613",
      "url": "https://patchblox.com/security/fix/microsoft/kb4338613",
      "released": "2018-07-10T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4095515",
      "url": "https://patchblox.com/security/fix/microsoft/kb4095515",
      "released": "2018-05-08T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4095875",
      "url": "https://patchblox.com/security/fix/microsoft/kb4095875",
      "released": "2018-05-08T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4054177",
      "url": "https://patchblox.com/security/fix/microsoft/kb4054177",
      "released": "2018-01-18T08:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4054999",
      "url": "https://patchblox.com/security/fix/microsoft/kb4054999",
      "released": "2018-01-18T08:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4040967",
      "url": "https://patchblox.com/security/fix/microsoft/kb4040967",
      "released": "2017-09-12T07:00:00Z",
      "fixedVersion": "",
      "priority": "Patch now",
      "cveCount": 1,
      "exploitedCveCount": 1
    },
    {
      "fix": "KB4040981",
      "url": "https://patchblox.com/security/fix/microsoft/kb4040981",
      "released": "2017-09-12T07:00:00Z",
      "fixedVersion": "",
      "priority": "Patch now",
      "cveCount": 1,
      "exploitedCveCount": 1
    },
    {
      "fix": "KB4019111",
      "url": "https://patchblox.com/security/fix/microsoft/kb4019111",
      "released": "2017-05-09T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4019114",
      "url": "https://patchblox.com/security/fix/microsoft/kb4019114",
      "released": "2017-05-09T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4014983",
      "url": "https://patchblox.com/security/fix/microsoft/kb4014983",
      "released": "2017-04-11T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB4014987",
      "url": "https://patchblox.com/security/fix/microsoft/kb4014987",
      "released": "2017-04-11T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB3163247",
      "url": "https://patchblox.com/security/fix/microsoft/kb3163247",
      "released": "2016-11-08T08:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB3188732",
      "url": "https://patchblox.com/security/fix/microsoft/kb3188732",
      "released": "2016-10-11T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB3188743",
      "url": "https://patchblox.com/security/fix/microsoft/kb3188743",
      "released": "2016-10-11T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB3142026",
      "url": "https://patchblox.com/security/fix/microsoft/kb3142026",
      "released": "2016-05-10T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB3142045",
      "url": "https://patchblox.com/security/fix/microsoft/kb3142045",
      "released": "2016-04-12T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 1,
      "exploitedCveCount": 0
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-12T19:57:06Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}