High

.NET Remote Code Execution Vulnerability

Type: advisorySource: Official CVE List1 source record

Improperly implemented security check for standard in .NET allows an unauthorized attacker to execute code over a network.

Announced 13 Oct 2026Group revision 1

Original source ↗

CVE-2026-70174

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-70174

.NET 10.0 runtime

Source reference: /containers/cna/affected/0/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

.NET 11.0 runtime

Source reference: /containers/cna/affected/1/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

.NET 8.0 runtime

Source reference: /containers/cna/affected/2/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

.NET 9.0 runtime

Source reference: /containers/cna/affected/3/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 3.5

Source reference: /containers/cna/affected/4/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2

Source reference: /containers/cna/affected/5/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 3.5 AND 4.7.2

Source reference: /containers/cna/affected/6/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 3.5 AND 4.8

Source reference: /containers/cna/affected/7/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 3.5 AND 4.8.1

Source reference: /containers/cna/affected/8/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2

Source reference: /containers/cna/affected/9/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 4.8

Source reference: /containers/cna/affected/10/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft .NET Framework 4.8.1

Source reference: /containers/cna/affected/11/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft Visual Studio 2022 version 17.14

Source reference: /containers/cna/affected/12/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Microsoft Visual Studio 2026 version 18.10

Source reference: /containers/cna/affected/13/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Microsoft",
    "product": ".NET 10.0 runtime",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.13",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 11.0 runtime",
    "versions": [
      {
        "status": "affected",
        "version": "11.0.0",
        "lessThan": "11.0.0-rc.2",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 8.0 runtime",
    "versions": [
      {
        "status": "affected",
        "version": "8.0.0",
        "lessThan": "8.0.32",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 9.0 runtime",
    "versions": [
      {
        "status": "affected",
        "version": "9.0.0",
        "lessThan": "9.0.21",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5",
    "versions": [
      {
        "status": "affected",
        "version": "3.5.0",
        "lessThan": "2.0.50727.9188 AND 3.0.30729.9171",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows 11 version 26H1",
      "Windows Server 2012",
      "Windows Server 2012 R2"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2",
    "versions": [
      {
        "status": "affected",
        "version": "3.0.0.0",
        "lessThan": "2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows 10 version 1607",
      "Windows Server 2016",
      "Windows Server 2019"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5 AND 4.7.2",
    "versions": [
      {
        "status": "affected",
        "version": "4.7.0",
        "lessThan": "2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows 10 version 1809"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5 AND 4.8",
    "versions": [
      {
        "status": "affected",
        "version": "4.8.0",
        "lessThan": "2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows 10 version 1809",
      "Windows 10 version 21H2",
      "Windows 10 version 22H2",
      "Windows Server 2019",
      "Windows Server 2022"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 3.5 AND 4.8.1",
    "versions": [
      {
        "status": "affected",
        "version": "4.8.1",
        "lessThan": "2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows 10 version 21H2",
      "Windows 10 version 22H2",
      "Windows 11 version 23H2",
      "Windows 11 version 24H2",
      "Windows 11 version 25H2",
      "Windows 11 version 26H2",
      "Windows Server 2022",
      "Windows Server 2025"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2",
    "versions": [
      {
        "status": "affected",
        "version": "4.7.0",
        "lessThan": "4.7.4150.0",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows Server 2012",
      "Windows Server 2012 R2"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 4.8",
    "versions": [
      {
        "status": "affected",
        "version": "4.8.0",
        "lessThan": "4.8.4811.0",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows 10 version 1607",
      "Windows Server 2012",
      "Windows Server 2012 R2",
      "Windows Server 2016"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft .NET Framework 4.8.1",
    "versions": [
      {
        "status": "affected",
        "version": "4.8.0.0",
        "lessThan": "4.8.9363.0",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "Windows 11 version 26H1"
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2022 version 17.14",
    "versions": [
      {
        "status": "affected",
        "version": "17.14.0",
        "lessThan": "17.14.42",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2026 version 18.10",
    "versions": [
      {
        "status": "affected",
        "version": "18.10.0",
        "lessThan": "18.10.4",
        "versionType": "custom"
      }
    ]
  }
]

Related CVEs: CVE-2026-70174
Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event: #53682 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 15:05:42 GMT
Publisher date: Tue, 13 Oct 2026 19:00:25 GMT

Read the original announcement

Revision history

25 Oct 2026CVE-2026-70174 · Revision 1Source updated