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CVE-2026-47300— ASP.NET Core Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft .NET 10.0 runtime
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 asp.net是美国Microsoft公司开源的一个Web应用开发框架。 Microsoft ASP.NET存在授权问题漏洞，该漏洞源于身份验证算法实现不正确，可能导致授权攻击者通过网络提升权限。以下版本受到影响：.NET 10.0 10.0.6之前版本、.NET 8.0 8.0.29之前版本、.NET 9.0 9.0.18之前版本、Microsoft Visual Studio 2022 version 17.12 17.12.22之前版本、Microsoft Visual Stud

CVSS 8.8 · High EPSS 0.78% · P56

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 6

VendorProduct Version RangeStatus
Microsoft .NET 10.0 runtime 10.0.0< 10.0.10 affected
Microsoft .NET 8.0 runtime 8.0.0< 8.0.29 affected
Microsoft .NET 9.0 runtime 9.0.0< 9.0.18 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-2026-47300

Vulnerability Information
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Vulnerability Title
ASP.NET Core Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证算法的不正确实现
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft ASP.NET 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft asp.net是美国Microsoft公司开源的一个Web应用开发框架。 Microsoft ASP.NET存在授权问题漏洞，该漏洞源于身份验证算法实现不正确，可能导致授权攻击者通过网络提升权限。以下版本受到影响：.NET 10.0 10.0.6之前版本、.NET 8.0 8.0.29之前版本、.NET 9.0 9.0.18之前版本、Microsoft Visual Studio 2022 version 17.12 17.12.22之前版本、Microsoft Visual Stud
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 10.0 runtime 10.0.0 ~ 10.0.10 -
Microsoft .NET 8.0 runtime 8.0.0 ~ 8.0.29 -
Microsoft .NET 9.0 runtime 9.0.0 ~ 9.0.18 -
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-2026-47300

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III. Intelligence Information for CVE-2026-47300

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Vendor Advisories for CVE-2026-47300 (1)

Same Patch Batch · Microsoft · 2026-07-14 · 570 CVEs total

CVE-2026-57092 9.9 CRITICAL Microsoft Windows VMSwitch Elevation of Privilege Vulnerability
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CVE-2026-54117 9.8 CRITICAL Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-42990 9.8 CRITICAL SQL Server ODBC driver Elevation of Privilege Vulnerability
CVE-2026-50522 9.8 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2026-58644 9.8 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2026-50518 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-56188 9.8 CRITICAL Windows Server Network driver Remote Code Execution Vulnerability
CVE-2026-55010 9.8 CRITICAL Minecraft Bedrock Dedicated Server Remote Code Execution Vulnerability
CVE-2026-56190 9.8 CRITICAL Remote Desktop Protocol 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-2026-56159 9.8 CRITICAL DHCP Server Service Remote Code Execution Vulnerability
CVE-2026-55944 9.8 CRITICAL Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Co
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-2026-55008 9.6 CRITICAL Microsoft Exchange Server Spoofing Vulnerability
CVE-2026-50380 9.6 CRITICAL Windows GDI+ Remote Code Execution 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 &rarr; →

IV. Related Vulnerabilities

Same product: .NET 10.0 runtime
Same vendor: Microsoft
Same weakness: CWE-303