CVE-2026-50646— .NET Framework Remote Code Execution Vulnerability
Quick assessment
Affected
Microsoft .NET 8.0
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是美国Microsoft公司的一个致力于敏捷软件开发、快速应用开发、平台无关性和网络透明化的软件框架。 Microsoft .NET存在反序列化注入漏洞，该漏洞源于保护机制失效，可能导致未经授权的攻击者在本地执行代码。以下版本受到影响：.NET 8.0 8.0.29之前版本、.NET 9.0 9.0.18之前版本、Microsoft .NET Framework 3.5 2.0.50727.8983和3.0.30729.8978之前版本、Microsoft .NET Frame
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 11
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | .NET 8.0 | 8.0.0< 8.0.29 |
affected |
| Microsoft | .NET 9.0 | 9.0.0< 9.0.18 |
affected |
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0< 2.0.50727.8983 & 3.0.30729.8978 |
affected |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0< 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0 |
affected |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0< 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 |
affected |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1< 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 |
affected |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0< 4.7.4143.0 |
affected |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0< 4.8.4803.0 |
affected |
| Microsoft | Microsoft Visual Studio 2022 version 17.12 | 17.12.0< 17.12.22 |
affected |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0< 17.14.36 |
affected |
| Microsoft | Microsoft Visual Studio 2026 version 18.7 | 18.0< 18.7.4 |
affected |
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I. Basic Information for CVE-2026-50646
Vulnerability Information
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Vulnerability Title
.NET Framework Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft .NET 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft .NET是美国Microsoft公司的一个致力于敏捷软件开发、快速应用开发、平台无关性和网络透明化的软件框架。 Microsoft .NET存在反序列化注入漏洞，该漏洞源于保护机制失效，可能导致未经授权的攻击者在本地执行代码。以下版本受到影响：.NET 8.0 8.0.29之前版本、.NET 9.0 9.0.18之前版本、Microsoft .NET Framework 3.5 2.0.50727.8983和3.0.30729.8978之前版本、Microsoft .NET Frame
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 | .NET 8.0 | 8.0.0 ~ 8.0.29 | - |
|
| Microsoft | .NET 9.0 | 9.0.0 ~ 9.0.18 | - |
|
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 ~ 2.0.50727.8983 & 3.0.30729.8978 | - |
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 ~ 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0 | - |
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 ~ 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 | - |
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 ~ 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 | - |
|
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0 ~ 4.7.4143.0 | - |
|
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 ~ 4.8.4803.0 | - |
|
| Microsoft | Microsoft Visual Studio 2022 version 17.12 | 17.12.0 ~ 17.12.22 | - |
|
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 ~ 17.14.36 | - |
|
| Microsoft | Microsoft Visual Studio 2026 version 18.7 | 18.0 ~ 18.7.4 | - |
|
II. Public POCs for CVE-2026-50646
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-50646 (1)
Same Patch Batch · Microsoft · 2026-07-14 · 570 CVEs total
| CVE-2026-57092 | 9.9 CRITICAL | Microsoft Windows VMSwitch Elevation of Privilege Vulnerability |
| CVE-2026-56190 | 9.8 CRITICAL | Remote Desktop Protocol Remote Code Execution Vulnerability |
| CVE-2026-50518 | 9.8 CRITICAL | Windows DHCP Server Remote Code Execution Vulnerability |
| CVE-2026-56159 | 9.8 CRITICAL | DHCP Server Service Remote Code Execution Vulnerability |
| CVE-2026-42990 | 9.8 CRITICAL | SQL Server ODBC driver Elevation of Privilege Vulnerability |
| CVE-2026-55944 | 9.8 CRITICAL | Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Co |
| CVE-2026-54118 | 9.8 CRITICAL | Microsoft SQL Server Remote Code Execution Vulnerability |
| CVE-2026-56188 | 9.8 CRITICAL | Windows Server Network driver Remote Code Execution Vulnerability |
| CVE-2026-54117 | 9.8 CRITICAL | Microsoft SQL Server Remote Code Execution Vulnerability |
| CVE-2026-58644 | 9.8 CRITICAL | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2026-50522 | 9.8 CRITICAL | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2026-54990 | 9.8 CRITICAL | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-50447 | 9.8 CRITICAL | Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability |
| CVE-2026-55010 | 9.8 CRITICAL | Minecraft Bedrock Dedicated Server Remote Code Execution Vulnerability |
| CVE-2026-49172 | 9.8 CRITICAL | Windows FTP Service Remote Code Execution Vulnerability |
| CVE-2026-48561 | 9.6 CRITICAL | Microsoft Edge Copilot Remote Code Execution Vulnerability |
| CVE-2026-50380 | 9.6 CRITICAL | Windows GDI+ Remote Code Execution Vulnerability |
| CVE-2026-55008 | 9.6 CRITICAL | Microsoft Exchange Server Spoofing Vulnerability |
| CVE-2026-49798 | 9.3 CRITICAL | Windows Kernel Elevation of Privilege Vulnerability |
| CVE-2026-55040 | 9.1 CRITICAL | Microsoft SharePoint Server Security Feature Bypass Vulnerability |
Showing top 20 of 570 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-50646
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