CVE-2026-71328 .NET and Visual Studio Remote Code Execution Vulnerability
Heap-based buffer overflow in Visual Studio allows remote attackers to execute arbitrary code over the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-71328?
CVE-2026-71328 is a high-severity memory corruption vulnerability in Microsoft .Net, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
Weakness: CWE-122
Which versions are affected by CVE-2026-71328?
4 open source packages ship an affected version, including Microsoft.DiaSymReader.Native, dotnet and dotnet-sdk. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.DiaSymReader.Native NuGet | From 17.10.0-beta1.24272.1 | 18.9.0-beta1.26405.2 |
Microsoft.DiaSymReader.Native NuGet | From 17.10.0-beta1.24272.1 | 18.9.0-beta1.26405.2 |
dotnet Bitnami | From 8.0.0 | 8.0.31, 9.0.20, 10.0.12 |
dotnet-sdk Bitnami | From 8.0.0 | 8.0.31, 9.0.20, 10.0.12 |
Products include Microsoft .Net, Microsoft Visual Studio 2022, Microsoft Visual Studio 2026.
How do I fix CVE-2026-71328?
Upgrade Microsoft.DiaSymReader.Native to 18.9.0-beta1.26405.2 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-71328 being exploited?
There is no known exploitation of CVE-2026-71328 in the wild and no public exploit code.
Other vulnerabilities in Microsoft .Net
- CVE-2024-43498 .NET and Visual Studio Remote Code Execution Vulnerability
- CVE-2024-0057 NET, .NET Framework, and Visual Studio Security Feature Bypass Vulnerability
- CVE-2026-96957 .NET Security Feature Bypass Vulnerability
- CVE-2026-69439 .NET and Visual Studio Elevation of Privilege Vulnerability
- CVE-2026-47300 ASP.NET Core Elevation of Privilege Vulnerability
Sources
Also known as BELL-CVE-2026-71328, BIT-dotnet-2026-71328, BIT-dotnet-sdk-2026-71328, GHSA-63gh-g2x5-x69v, MINI-929r-9qm7-w7hh, MINI-h2pg-g8rm-m34q and 1 more.