CVE-2026-70194 · GHSA-fqpq-cx42-9jmm
Microsoft Security Advisory CVE-2026-70194 - .NET and Visual Studio Security Feature Bypass Vulnerability
- Risk score
- 56/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
- Affected
- Microsoft.NETCore.App.Runtime.linux-arm (nuget) >= 11.0.0-preview.1, <= 11.0.0-rc.1; Microsoft.NETCore.App.Runtime.linux-arm64 (nuget) >= 11.0.0-preview.1, <= 11.0.0-rc.1; Microsoft.NETCore.App.Runtime.linux-musl-arm (nuget) >= 11.0.0-preview.1, <= 11.0.0-rc.1; Microsoft.NETCore.App.Runtime.linux-m…
- Fix
- Upgrade Microsoft.NETCore.App.Runtime.linux-arm to 11.0.0-rc.2; Microsoft.NETCore.App.Runtime.linux-arm64 to 11.0.0-rc.2; Microsoft.NETCore.App.Runtime.linux-musl-arm to 11.0.0-rc.2; Microsoft.NETCore.App.Runtime.linux-musl-arm64 to 11.0.0-rc.2; Microsoft.NETCore.App.Runtime.linux-musl-x64 to 11.0.…
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.5 medium
- On your watchlist: .net, NuGet
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| Microsoft.NETCore.App.Runtime.linux-arm | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.NETCore.App.Runtime.linux-arm64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.NETCore.App.Runtime.linux-musl-arm | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.NETCore.App.Runtime.linux-musl-arm64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.NETCore.App.Runtime.linux-musl-x64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.NETCore.App.Runtime.linux-x64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.NETCore.App.Runtime.osx-arm64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.NETCore.App.Runtime.osx-x64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
References
- 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
- https://github.com/advisories/GHSA-fqpq-cx42-9jmm
Original description
Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
Last activity 13 Oct 2026. Patch Forecast updates every hour.