PatchTheCVECVE-2026-70194: Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature
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MEDIUM 6.5REMOTEWATCHLIST
CVE-2026-70194 is a medium-severity flaw (CVSS 6.5) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper certificate validation in .NET Framework allows an unauthorized attacker to bypass a security feature over a network.
Why this priority
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 64%) |
| CISA exploited list | No |
| Weakness | CWE-295 |
| Published | 2026-10-13 |
| Last modified | 2026-10-22 |
Publisher (CNA): Microsoft Corporation
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
NuGet (.NET) · Microsoft.NETCore.App.Runtime.linux-arm · FIXED · 11.0.0-rc.2 · vulnerable: >= 11.0.0-preview.1, <= 11.0.0-rc.1 · source
dotnet add package Microsoft.NETCore.App.Runtime.linux-arm --version 11.0.0-rc.2
NuGet (.NET) · Microsoft.NETCore.App.Runtime.linux-arm64 · FIXED · 11.0.0-rc.2 · vulnerable: >= 11.0.0-preview.1, <= 11.0.0-rc.1 · source
dotnet add package Microsoft.NETCore.App.Runtime.linux-arm64 --version 11.0.0-rc.2
NuGet (.NET) · Microsoft.NETCore.App.Runtime.linux-musl-arm · FIXED · 11.0.0-rc.2 · vulnerable: >= 11.0.0-preview.1, <= 11.0.0-rc.1 · source
dotnet add package Microsoft.NETCore.App.Runtime.linux-musl-arm --version 11.0.0-rc.2
NuGet (.NET) · Microsoft.NETCore.App.Runtime.linux-musl-arm64 · FIXED · 11.0.0-rc.2 · vulnerable: >= 11.0.0-preview.1, <= 11.0.0-rc.1 · source
dotnet add package Microsoft.NETCore.App.Runtime.linux-musl-arm64 --version 11.0.0-rc.2
NuGet (.NET) · Microsoft.NETCore.App.Runtime.linux-musl-x64 · FIXED · 11.0.0-rc.2 · vulnerable: >= 11.0.0-preview.1, <= 11.0.0-rc.1 · source
dotnet add package Microsoft.NETCore.App.Runtime.linux-musl-x64 --version 11.0.0-rc.2
NuGet (.NET) · Microsoft.NETCore.App.Runtime.linux-x64 · FIXED · 11.0.0-rc.2 · vulnerable: >= 11.0.0-preview.1, <= 11.0.0-rc.1 · source
dotnet add package Microsoft.NETCore.App.Runtime.linux-x64 --version 11.0.0-rc.2
Fedora 46 · retext · FIXED · 8.1.0-1.fc46 · FEDORA-2026-0602a84203 · source
sudo dnf upgrade --advisory=FEDORA-2026-0602a84203
Ubuntu 22.04 · dotnet6 · NOT AFFECTED
Ubuntu 22.04 · dotnet8 · NOT AFFECTED
Ubuntu 24.04 · dotnet8 · NOT AFFECTED
Ubuntu 24.04 · dotnet10 · NOT AFFECTED
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.