medium6.5
CVE-2026-70194
Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
Impact
Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Microsoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| nuget | Microsoft.NETCore.App.Runtime.linux-arm64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| nuget | Microsoft.NETCore.App.Runtime.linux-musl-arm | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| nuget | Microsoft.NETCore.App.Runtime.linux-musl-arm64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| nuget | Microsoft.NETCore.App.Runtime.linux-musl-x64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| nuget | Microsoft.NETCore.App.Runtime.linux-x64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| nuget | Microsoft.NETCore.App.Runtime.osx-arm64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| nuget | Microsoft.NETCore.App.Runtime.osx-x64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Microsoft Visual Studio 2026 Version 18.10 | from 18.10.0 before 18.10.4 |
| Microsoft | .NET 11.0 Runtime | from 11.0.0 before 11.0.0-rc.2 |
| Microsoft | Microsoft Visual Studio 2022 Version 17.14 | from 17.14.0 before 17.14.42 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-fqpq-cx42-9jmm
- https://github.com/dotnet/runtime/security/advisories/GHSA-fqpq-cx42-9jmm
- https://github.com/dotnet/announcements/issues/464
- https://github.com/dotnet/runtime/issues/135701
- https://nvd.nist.gov/vuln/detail/CVE-2026-70194
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70194