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EUVD-2021-2231PublishedWithdrawn

ASP.NET Core Denial of Service Vulnerability

Recorded JSON

cve-program · CVE-2021-31957

Published

Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": "Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)",
                    "cpes": [
                        "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "16.0",
                            "lessThan": "16.4.23",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": "Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)",
                    "cpes": [
                        "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "16.0.0",
                            "lessThan": "16.7.16",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
                    "cpes": [
                        "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "15.0.0",
                            "lessThan": "16.9.7",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": "Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)",
                    "cpes": [
                        "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "16.10.0",
                            "lessThan": "16.10.1",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Visual Studio 2019 for Mac version 8.10

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": "Visual Studio 2019 for Mac version 8.10",
                    "cpes": [
                        "cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "8.1.0",
                            "lessThan": "8.10.1",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

.NET Core 3.1

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": ".NET Core 3.1",
                    "cpes": [
                        "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "3.1",
                            "lessThan": "3.1.16",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

.NET 5.0

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Microsoft",
                    "product": ".NET 5.0",
                    "cpes": [
                        "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "5.0.0",
                            "lessThan": "5.0.7",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2021-2231

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jun 8, 2021, 10:46:26 PM

dateUpdated: Oct 7, 2026, 4:12:06 PM

4 related source bulletins · separate from aliases

RHSA-2021:2351: Red Hat Security Advisory: .NET 5.0 on RHEL 7 security and bugfix update

CVE-2021-31957

RHSA-2021:2350: Red Hat Security Advisory: .NET Core 3.1 on RHEL 7 security and bugfix update

CVE-2021-31957

RHSA-2021:2352: Red Hat Security Advisory: .NET Core 3.1 security and bugfix update

CVE-2021-31957

RHSA-2021:2353: Red Hat Security Advisory: .NET 5.0 security and bugfix update

CVE-2021-31957

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2021-31957

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Modified

Weakness classifications: NVD-CWE-noinfo · CWE-400

Original publisher date fields

published: 2021-06-08T23:15:08.870

lastModified: 2026-10-07T17:16:42.677

6 source CPE criteria · context only
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-mcwm-2wmc-6hv4

Withdrawn

Microsoft.NETCore.App.Ref

NuGet

ECOSYSTEM · introduced 0 → fixed 3.1.16

11 explicitly affected versions

3.0.0, 3.0.0-preview3-27503-5, 3.0.0-preview4-27615-11, 3.0.0-preview5-27626-15, 3.0.0-preview6-27804-01, 3.0.0-preview7-27912-14, 3.0.0-preview8-28405-07, 3.0.0-preview9-19423-09, 3.0.0-rc1-19456-20, 3.0.1, 3.1.0

Microsoft.NETCore.App.Ref

NuGet

ECOSYSTEM · introduced 5.0.0 → fixed 5.0.7

1 explicitly affected versions

5.0.0

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 13:09 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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