CVE-2022-21986: .NET Denial of Service Vulnerability

Overview

Severity

High (CVSS 7.5)

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

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2022-Feb

Released

2022-02-08

EPSS Score

1.71% (percentile: 82.4%)

FAQ

What .NET component is affected by this denial of service vulnerability? This vulnerability affects applications that utilize the Kestrel web server when processing certain HTTP/2 and HTTP/3 requests.

Affected Products (6)

Developer Tools

• Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)
• Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)
• Microsoft Visual Studio 2022 version 17.0
• Visual Studio 2019 for Mac version 8.10
• .NET 5.0
• .NET 6.0

Security Updates (6)

• Release Notes
• Release Notes
• Release Notes
• Release Notes
• Release Notes
• Release Notes

Revision History

• 2022-02-08: Information published.