CVE-2021-1721— .NET Core and Visual Studio Denial of Service Vulnerability
Quick assessment
Affected
Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft .NET Core是美国微软（Microsoft）公司的一套免费的开源开发平台。该平台具有多语言支持和跨平台等特点。 Microsoft .NET Core 和 Microsoft Visual Studio 中存在安全漏洞。以下产品和版本受到影响：Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6),.NET Core 2.1,.NET Core 3.1,.NET 5.0,Microsoft Visual S
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 9
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | .NET 5.0 | 5.0.0< publication |
affected |
| Microsoft | .NET Core 2.1 | 2.1< publication |
affected |
| Microsoft | .NET Core 3.1 | 3.1< publication |
affected |
| Microsoft | Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | 15.9.0< publication |
affected |
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | 16.0< publication |
affected |
| Microsoft | Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | 16.0.0< publication |
affected |
| Microsoft | Microsoft Visual Studio 2019 version 16.8 | 16.0< publication |
affected |
| Microsoft | PowerShell Core 7.0 | 7.0.0< publication |
affected |
| Microsoft | PowerShell Core 7.1 | 7.1.0< publication |
affected |
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I. Basic Information for CVE-2021-1721
Vulnerability Information
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Vulnerability Title
.NET Core and Visual Studio Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
.NET Core and Visual Studio Denial of Service Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft .NET Core 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft .NET Core是美国微软（Microsoft）公司的一套免费的开源开发平台。该平台具有多语言支持和跨平台等特点。 Microsoft .NET Core 和 Microsoft Visual Studio 中存在安全漏洞。以下产品和版本受到影响：Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6),.NET Core 2.1,.NET Core 3.1,.NET 5.0,Microsoft Visual S
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | 16.0.0 ~ publication |
cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
|
|
| Microsoft | PowerShell Core 7.1 | 7.1.0 ~ publication |
cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*
|
|
| Microsoft | PowerShell Core 7.0 | 7.0.0 ~ publication |
cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*
|
|
| Microsoft | .NET Core 2.1 | 2.1 ~ publication |
cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*
|
|
| Microsoft | .NET Core 3.1 | 3.1 ~ publication |
cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*
|
|
| Microsoft | .NET 5.0 | 5.0.0 ~ publication |
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
|
|
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | 16.0 ~ publication |
cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
|
|
| Microsoft | Microsoft Visual Studio 2019 version 16.8 | 16.0 ~ publication |
cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
|
|
| Microsoft | Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | 15.9.0 ~ publication |
cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*
|
|
II. Public POCs for CVE-2021-1721
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2021-1721 (1)
Same Patch Batch · Microsoft · 2021-02-25 · 58 CVEs total
| CVE-2021-24077 | 9.8 CRITICAL | Windows Fax Service Remote Code Execution Vulnerability |
| CVE-2021-24078 | 9.8 CRITICAL | Windows DNS Server Remote Code Execution Vulnerability |
| CVE-2021-24074 | 9.8 CRITICAL | Windows TCP/IP Remote Code Execution Vulnerability |
| CVE-2021-24094 | 9.8 CRITICAL | Windows TCP/IP Remote Code Execution Vulnerability |
| CVE-2021-24088 | 8.8 HIGH | Windows Local Spooler Remote Code Execution Vulnerability |
| CVE-2021-24066 | 8.8 HIGH | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2021-24093 | 8.8 HIGH | Windows Graphics Component Remote Code Execution Vulnerability |
| CVE-2021-24072 | 8.8 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2021-1728 | 8.8 HIGH | System Center Operations Manager Elevation of Privilege Vulnerability |
| CVE-2020-17162 | 8.8 HIGH | Microsoft Windows Security Feature Bypass Vulnerability |
| CVE-2021-24105 | 8.4 HIGH | Package Managers Configurations Remote Code Execution Vulnerability |
| CVE-2021-1722 | 8.1 HIGH | Windows Fax Service Remote Code Execution Vulnerability |
| CVE-2021-26701 | 8.1 HIGH | .NET Core Remote Code Execution Vulnerability |
| CVE-2021-24112 | 8.1 HIGH | .NET Core Remote Code Execution Vulnerability |
| CVE-2021-1726 | 8.0 HIGH | Microsoft SharePoint Server Spoofing Vulnerability |
| CVE-2021-24083 | 7.8 HIGH | Windows Address Book Remote Code Execution Vulnerability |
| CVE-2021-25195 | 7.8 HIGH | Windows PKU2U Elevation of Privilege Vulnerability |
| CVE-2021-26700 | 7.8 HIGH | Visual Studio Code npm-script Extension Remote Code Execution Vulnerability |
| CVE-2021-24103 | 7.8 HIGH | Windows Event Tracing Elevation of Privilege Vulnerability |
| CVE-2021-24091 | 7.8 HIGH | Windows Camera Codec Pack Remote Code Execution Vulnerability |
Showing top 20 of 58 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-1721
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