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CVE-2026-71328— .NET and Visual Studio Remote Code Execution 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 .NET是美国Microsoft公司开源的一款软件开发框架。 Microsoft .NET存在缓冲区错误漏洞，该漏洞源于堆缓冲区溢出，可能导致未经授权的攻击者通过网络执行代码。

CVSS 8.8 · High EPSS 0.82% · P57 Updated Nov 01, 2026

Possible ATT&CK Techniques 3 AI

T1064 T1204 · User Execution T1203 · Exploitation for Client Execution

Affected Version Matrix 6

Vendor	Product	Version Range	Status
Microsoft	.NET 10.0 runtime	`10.0.0< 10.0.12`	affected
Microsoft	.NET 11.0 runtime	`11.0.0< 11.0 RC1`	affected
Microsoft	.NET 8.0 runtime	`8.0.0< 8.0.31`	affected
Microsoft	.NET 9.0 runtime	`9.0.0< 9.0.20`	affected
Microsoft	Microsoft Visual Studio 2022 version 17.14	`17.14.0< 17.14.40`	affected
Microsoft	Microsoft Visual Studio 2026 version 18.9	`18.9.0< 18.9.3`	affected

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I. Basic Information for CVE-2026-71328

Vulnerability Information

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Vulnerability Title

.NET and Visual Studio Remote Code Execution Vulnerability

Source: CVE Program / CVE List V5

Vulnerability Description

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

堆缓冲区溢出

Source: CVE Program / CVE List V5

Vulnerability Title

Microsoft .NET 缓冲区错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

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
Microsoft	.NET 10.0 runtime	10.0.0 ~ 10.0.12	-
Microsoft	.NET 11.0 runtime	11.0.0 ~ 11.0 RC1	-
Microsoft	.NET 8.0 runtime	8.0.0 ~ 8.0.31	-
Microsoft	.NET 9.0 runtime	9.0.0 ~ 9.0.20	-
Microsoft	Microsoft Visual Studio 2022 version 17.14	17.14.0 ~ 17.14.40	-
Microsoft	Microsoft Visual Studio 2026 version 18.9	18.9.0 ~ 18.9.3	-

II. Public POCs for CVE-2026-71328

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-71328

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Vendor Advisories for CVE-2026-71328 (1)

🔗 CVE-2026-71328 - Security Update Guide - Microsoft - .NET and Visual Studio Remote Code Execution Vulnerability Read full article vendor-advisory patch

https://www.cve.org/CVERecord?id=CVE-2026-71328

Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total

CVE-2026-83941	9.9 CRITICAL	Entra ID Elevation of Privilege Vulnerability
CVE-2026-69586	9.8 CRITICAL	Microsoft Windows PDF Remote Code Execution Vulnerability
CVE-2026-68839	9.8 CRITICAL	Windows USB Mass Storage Class Driver Remote Code Execution Vulnerability
CVE-2026-69730	9.8 CRITICAL	Windows DNS Server Remote Code Execution Vulnerability
CVE-2026-69408	9.8 CRITICAL	Microsoft Windows Media Foundation Remote Code Execution Vulnerability
CVE-2026-69910	9.8 CRITICAL	Windows Hyper-V Remote Code Execution Vulnerability
CVE-2026-77493	9.8 CRITICAL	Windows Graphics Component Remote Code Execution Vulnerability
CVE-2026-78445	9.8 CRITICAL	Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
CVE-2026-69579	9.8 CRITICAL	Windows Message Queuing Remote Code Execution Vulnerability
CVE-2026-69824	9.8 CRITICAL	Microsoft Standard XPS Remote Code Execution Vulnerability
CVE-2026-73025	9.8 CRITICAL	Windows iSCSI Security Feature Bypass Vulnerability
CVE-2026-72979	9.8 CRITICAL	Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-69493	9.8 CRITICAL	Windows Event Logging Service Remote Code Execution Vulnerability
CVE-2026-69829	9.8 CRITICAL	Windows Shell Remote Code Execution Vulnerability
CVE-2026-69845	9.8 CRITICAL	Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-69769	9.8 CRITICAL	Windows HTTP Print Provider Remote Code Execution Vulnerability
CVE-2026-72982	9.8 CRITICAL	Windows Netlogon Remote Code Execution Vulnerability
CVE-2026-69276	9.8 CRITICAL	Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability
CVE-2026-67631	9.8 CRITICAL	Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-72983	9.8 CRITICAL	Internet Connection Sharing (ICS) Remote Code Execution Vulnerability

Showing top 20 of 966 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: .NET 10.0 runtime

Same vendor: Microsoft

Same weakness: CWE-122