CVE-2021-26423

Published: Aug 12, 2021Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD (Secondary)

Description

.NET Core and Visual Studio Denial of Service Vulnerability

Affected (8)

Products: Microsoft: .net, .net Core, Powershell Core, Visual Studio 2017, Visual Studio 2019

5 products

Powershell Core

Visual Studio 2017

Visual Studio 2019

Configuration A

8 vulnerable

Vulnerable Software	Affected Versions
Microsoft .net	From 5.0 to 5.0.8
Microsoft .net Core	From 2.1 to 2.1.28
Microsoft .net Core	From 3.1 to 3.1.17
Microsoft Powershell Core	From 7.0 to 7.0.7
Microsoft Powershell Core	From 7.1 to 7.1.4
Microsoft Visual Studio 2017	From 15.0 to 15.9
Microsoft Visual Studio 2019	From 16.0 to 16.10
Microsoft Visual Studio 2019	Version 8.10

References (2)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423

Source: secure@microsoft.com

PatchVendor Advisory

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

Timeline

No history available yet.