CVE-2021-31204

.NET and Visual Studio Elevation of Privilege Vulnerability

HIGH

7.3

CVSS Score

Published: May 11, 2021 at 07:11 PM UTC

Updated: October 7, 2026 at 05:16 PM UTC

5 products affected across 2 vendorsFedora.netVisual Studio 2019

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Severity

HIGH7.3

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

.NET and Visual Studio Elevation of Privilege Vulnerability

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fedora · Fedora Projectrpm

95%

32 33 34

.net · Microsoft

95%

5.0 ≤ v ≤ 5.0.55.0.0 ≤ v < 5.0.6-servicing.21220.11*5.0.0

Affected range stops below 5.0.6-servicing.21220.11, so it looks safe — our inference, not a vendor statement

.NET Core · Microsoft

95%

3.1 ≤ v ≤ 3.1.143.1 ≤ v < 3.1.15-servicing.21214.3*3.1

Affected range stops below 3.1.15-servicing.21214.3, so it looks safe — our inference, not a vendor statement

Visual Studio 2019 · Microsoft

95%

15.0.0 ≤ v < publication16.0 ≤ v < 16.4.2216.0 ≤ v < publication16.0.0 ≤ v < publication16.5.0 ≤ v < 16.7.1516.8.0 ≤ v < 16.9.5*15.0.0 16.0 16.0.0 16.9 8.10 8.9

Affected range stops below 16.4.22, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.7.15, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.9.5, so it looks safe — our inference, not a vendor statement

Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Visual Studio for Mac · Microsoft

90%

8.0 ≤ v < publication8.0

Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references