high7.8
CVE-2026-70354
Microsoft Security Advisory CVE-2026-70354 – .NET Core Remote Code Execution Vulnerability
Impact
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.10 | 10.0.11 |
| nuget | Microsoft.WindowsDesktop.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.10 | 10.0.11 |
| nuget | Microsoft.WindowsDesktop.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.10 | 10.0.11 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Visual Studio 2022 | from 17.14.0 before 17.14.38 |
| Microsoft | Visual Studio 2026 | from 18.8.0 before 18.8.3 |
| Microsoft | .Net Framework | Versions 4.8.1, 4.8, 4.6.2, 4.7, 4.7.1, 4.7.2 |
| Microsoft | .Net | from 8.0.0 before 8.0.30 from 9.0.0 before 9.0.19 from 10.0.0 before 10.0.11 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-gg8c-3338-xw2f
- https://github.com/dotnet/wpf/security/advisories/GHSA-gg8c-3338-xw2f
- https://nvd.nist.gov/vuln/detail/CVE-2026-70354
- https://github.com/dotnet/announcements/issues/432
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70354