CVE-2021-31204

mediumpriority · track · 18EPSS 0.012 · 68 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.19% (68th) EPSS

CVSS 4.6 · medium

Is it mine?

23 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

.NET and Visual Studio Elevation of Privilege Vulnerability

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.9–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v2.03.9lowAV:L/AC:L/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.3highCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.3highCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.3 · impact 5.9

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-264USCWE-269US

affected products (23)

Products and version ranges known to be affected.

Microsoft .NET 5.05.0.0 → 5.0.6-servicing.21220.11enisa_euvdEU
Microsoft .NET Core 3.13.1 → 3.1.15-servicing.21214.3enisa_euvdEU
Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)16.0 → publicationenisa_euvdEU
Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)16.0.0 → publicationenisa_euvdEU
Microsoft Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)15.0.0 → publicationenisa_euvdEU
Microsoft Visual Studio 2019 for Mac version 8.98.0 → publicationenisa_euvdEU
Microsoft Corp .NET Core≤ 3.1fstec_bduRU
Microsoft Corp Microsoft .NET Framework 5.0all versionsfstec_bduRU
Microsoft Corp Microsoft Visual Studio 2019≤ 8.9fstec_bduRU
Microsoft Corp Microsoft Visual Studio 201916.0 → 16.3fstec_bduRU
Microsoft Corp Microsoft Visual Studio 201916.0 → 16.8fstec_bduRU
Microsoft Corp Microsoft Visual Studio 201916.0 → 16.6fstec_bduRU
fedoraproject fedora= 32nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 33nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 34nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
microsoft .net5.0 → 5.0.5nvdUScpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft .net core3.1 → 3.1.14nvdUScpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*
microsoft visual studio 201916.0 → 16.4.22nvdUScpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
microsoft visual studio 201916.5.0 → 16.7.15nvdUScpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
microsoft visual studio 201916.8.0 → 16.9.5nvdUScpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*

showing 20 of 23

advisories (2)

Vendor and ecosystem advisories describing this.

BIT-dotnet-2021-31204.NET and Visual Studio Elevation of Privilege Vulnerability2024-03-06vendor · osvUS
.NET and Visual Studio Elevation of Privilege Vulnerability
BIT-dotnet-sdk-2021-31204.NET and Visual Studio Elevation of Privilege Vulnerability2024-03-06vendor · osvUS
.NET and Visual Studio Elevation of Privilege Vulnerability

also known as (5)

Other names and identifiers for this entity.

CNNVD-202105-624 cnnvd
EUVD-2021-18117 enisa_euvd
BDU:2021-02646 fstec_bdu
BIT-dotnet-2021-31204osv
BIT-dotnet-sdk-2021-31204osv

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2021-05-11modified 2026-06-17

references (32)

External citations — patches, advisories, analysis.

scry

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