CVE-2021-26423 HIGH

CVE-2021-26423: .NET Core and Visual Studio Denial of Service Vulnerability

Vendor Microsoft
Product Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
Published August 12, 2021
Last update May 28, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

.NET Core and Visual Studio Denial of Service Vulnerability

Key dates

02Disclosure timeline

August 12, 2021 CVE published
May 28, 2026 Record updated