high7.5
CVE-2026-58280
Microsoft Security Advisory CVE-2026-58280 - .NET and Visual Studio Denial of Service Vulnerability
Impact
Uncontrolled recursion in .NET allows an unauthorized attacker to deny service over a network.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Microsoft.NETCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| nuget | Microsoft.NETCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.20 | 9.0.21 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | Version 4.8.0 <2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0 |
| Microsoft | .NET 9.0 Runtime | from 9.0.0 before 9.0.21 |
| Microsoft | Microsoft .NET Framework 4.8 | from 4.8.0 before 4.8.4811.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | Version 4.8.1 <2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0 |
| Microsoft | Microsoft Visual Studio 2022 Version 17.14 | from 17.14.0 before 17.14.42 |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | from 4.7.0 before 4.7.4150.0 |
| Microsoft | .NET 8.0 Runtime | from 8.0.0 before 8.0.32 |
| Microsoft | .NET 11.0 Runtime | from 11.0.0 before 11.0.0-rc.2 |
| Microsoft | Microsoft .NET Framework 4.8.1 | from 4.8.0.0 before 4.8.9363.0 |
| Microsoft | .NET 10.0 Runtime | from 10.0.0 before 10.0.13 |
| Microsoft | Microsoft .NET Framework 3.5 | Version 3.5.0 <2.0.50727.9188 AND 3.0.30729.9171 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | Version 4.7.0 <2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-mc4q-93x5-f6hj
- https://github.com/dotnet/runtime/security/advisories/GHSA-mc4q-93x5-f6hj
- https://github.com/dotnet/announcements/issues/447
- https://github.com/dotnet/runtime/issues/135696
- https://nvd.nist.gov/vuln/detail/CVE-2026-58280
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58280