What is CVE-2026-71328?

CVE-2026-71328 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. .NET and Visual Studio Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-71328 cover?

CVE-2026-71328 covers the following CVE IDs: CVE-2026-71328. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-71328?

CVE-2026-71328 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-71328?

CVE-2026-71328 affects 6 products, including: .NET 10.0 installed on Windows; .NET 11.0 installed on Windows; .NET 8.0 installed on Windows; .NET 9.0 installed on Windows; Microsoft Visual Studio 2022 version 17.14; and others — see the full list on the advisory page.

CVE-2026-71328HighCVSS 8.8

.NET and Visual Studio Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

September 11, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-71328 →

📋 Description

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

🎯 Affected products6

.NET 10.0 installed on Windows
.NET 11.0 installed on Windows
.NET 8.0 installed on Windows
.NET 9.0 installed on Windows
Microsoft Visual Studio 2022 version 17.14
Microsoft Visual Studio 2026 version 18.9

✅ Remediation

KBRelease Notes (Security Update) — fixed build 18.9.3 KB5126106 (Security Update) — fixed build 10.0.12 KB5126104 (Security Update) — fixed build 8.0.31 KB5126105 (Security Update) — fixed build 9.0.20 KBRelease Notes (Security Update) — fixed build 17.14.40 Security Update — fixed build 11.0 RC1

🔗 References (12)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71328
patchhttps://www.catalog.update.microsoft.com/Search.aspx?q=Visual Studio 2026 18.9.3
referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes
patchhttps://dotnet.microsoft.com/download/dotnet/10.0
referencehttps://support.microsoft.com/help/5126106
patchhttps://dotnet.microsoft.com/download/dotnet/8.0
referencehttps://support.microsoft.com/help/5126104
patchhttps://dotnet.microsoft.com/download/dotnet/9.0
referencehttps://support.microsoft.com/help/5126105
patchhttps://www.catalog.update.microsoft.com/Search.aspx?q=Visual Studio 2022 17.14.40
referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
patchhttps://dotnet.microsoft.com/download/dotnet/11.0