CVE-2026-66822
Medium
Description
Insertion of sensitive information into sent data in .NET allows an unauthorized attacker to disclose information over a network.
SeverityMedium
CVSS5.9
Exploit probability—
ProductMicrosoft.netcore.app.runtime.linux-arm
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-201CWE-201
How to fix
Update
- Microsoft.NETCore.App.Runtime.linux-arm9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.linux-arm649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.linux-musl-arm9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.linux-musl-arm649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.linux-musl-x649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.linux-x649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.osx-arm649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.osx-x649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.win-arm649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.win-x649.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
- Microsoft.NETCore.App.Runtime.win-x869.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft.NETCore.App.Runtime.linux-armNuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.linux-arm64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.linux-musl-armNuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.linux-musl-arm64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.linux-musl-x64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.linux-x64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.osx-arm64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.osx-x64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.win-arm64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.win-x64NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
| Microsoft.NETCore.App.Runtime.win-x86NuGet | 9.0.0 ≤ v < 9.0.21, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.32 | 9.0.21, 11.0.0-rc.2, 10.0.13, 8.0.32 |
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