Description
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | .NET 10.0 runtime | 10.0.0 – < 10.0.11 | 10.0.11 |
| Microsoft | .NET 8.0 runtime | 8.0.0 – < 8.0.30 | 8.0.30 |
| Microsoft | .NET 9.0 runtime | 9.0.0 – < 9.0.19 | 9.0.19 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 | 3.0.0.0 – < 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 | 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 – < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 – < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 | 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 – < 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0 – < 4.7.4144.0 | 4.7.4144.0 |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 – < 4.8.4805.0 | 4.8.4805.0 |
| Microsoft | Microsoft .NET Framework 4.8.1 | 4.8.0.0 – < 4.8.9344.0 | 4.8.9344.0 |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 – < 17.14.38 | 17.14.38 |
| Microsoft | Microsoft Visual Studio 2026 version 18.8 | 18.0 – < 18.8.3 | 18.8.3 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | dotnet7 | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | dotnet10-runtime | 10.0.12-r0 | — |
| Alpine v3.24 | dotnet8-runtime | 8.0.31-r0 | — |
| Alpine v3.24 | dotnet9-runtime | 9.0.20-r0 | — |
| Alpine v3.23 | dotnet10-runtime | 10.0.13-r0 | — |
| Alpine v3.23 | dotnet8-runtime | 8.0.31-r0 | — |
| Alpine v3.23 | dotnet9-runtime | 9.0.20-r0 | — |
| Alpine v3.22 | dotnet8-runtime | 8.0.31-r0 | — |
| Alpine v3.22 | dotnet9-runtime | 9.0.20-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | >= 10.0.0, < 10.0.11 | 10.0.11 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | >= 9.0.0, < 9.0.19 | 9.0.19 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | >= 8.0.0, < 8.0.30 | 8.0.30 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x64 | >= 10.0.0, < 10.0.11 | 10.0.11 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x64 | >= 9.0.0, < 9.0.19 | 9.0.19 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x64 | >= 8.0.0, < 8.0.30 | 8.0.30 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x86 | >= 10.0.0, < 10.0.11 | 10.0.11 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x86 | >= 9.0.0, < 9.0.19 | 9.0.19 | GHSA-fx4q-gjrx-2jw6 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x86 | >= 8.0.0, < 8.0.30 | 8.0.30 | GHSA-fx4q-gjrx-2jw6 |
Advisories 3
- WID-SEC-2026-2761 Microsoft Developer Tools: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- MSRC-CVE-2026-62897 .NET Framework Remote Code Execution Vulnerability Microsoft Security Response Center · Aug 13, 2026
- NCSC-2026-0285 Kwetsbaarheden verholpen in Microsoft Developer Tools NCSC-NL (Netherlands) · Aug 11, 2026
References
- .NET Framework Remote Code Execution Vulnerability vendor-advisory patch