CVE-2026-70197
High
Description
Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
SeverityHigh
CVSS8.1
Exploit probability56. percentile0.8%
ProductMicrosoft.netcore.app.runtime.win-arm64
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- Microsoft.NETCore.App.Runtime.win-arm648.0.32, 11.0.0-rc.2, 9.0.21, 10.0.13, 8.0.33, 11.0.0-rc.3.26522.148, 9.0.22, 10.0.14 or later
- Microsoft.NETCore.App.Runtime.win-x648.0.32, 11.0.0-rc.2, 9.0.21, 10.0.13, 8.0.33, 11.0.0-rc.3.26522.148, 9.0.22, 10.0.14 or later
- Microsoft.NETCore.App.Runtime.win-x868.0.32, 11.0.0-rc.2, 9.0.21, 10.0.13, 8.0.33, 11.0.0-rc.3.26522.148, 9.0.22, 10.0.14 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft.NETCore.App.Runtime.win-arm64NuGet | 8.0.0 ≤ v < 8.0.32, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 9.0.0 ≤ v < 9.0.21, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.33, 11.0.0-preview.1 ≤ v < 11.0.0-rc.3.26522.148, 9.0.0 ≤ v < 9.0.22, 10.0.0 ≤ v < 10.0.14 | 8.0.32, 11.0.0-rc.2, 9.0.21, 10.0.13, 8.0.33, 11.0.0-rc.3.26522.148, 9.0.22, 10.0.14 |
| Microsoft.NETCore.App.Runtime.win-x64NuGet | 8.0.0 ≤ v < 8.0.32, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 9.0.0 ≤ v < 9.0.21, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.33, 11.0.0-preview.1 ≤ v < 11.0.0-rc.3.26522.148, 9.0.0 ≤ v < 9.0.22, 10.0.0 ≤ v < 10.0.14 | 8.0.32, 11.0.0-rc.2, 9.0.21, 10.0.13, 8.0.33, 11.0.0-rc.3.26522.148, 9.0.22, 10.0.14 |
| Microsoft.NETCore.App.Runtime.win-x86NuGet | 8.0.0 ≤ v < 8.0.32, 11.0.0-preview.1 ≤ v < 11.0.0-rc.2, 9.0.0 ≤ v < 9.0.21, 10.0.0 ≤ v < 10.0.13, 8.0.0 ≤ v < 8.0.33, 11.0.0-preview.1 ≤ v < 11.0.0-rc.3.26522.148, 9.0.0 ≤ v < 9.0.22, 10.0.0 ≤ v < 10.0.14 | 8.0.32, 11.0.0-rc.2, 9.0.21, 10.0.13, 8.0.33, 11.0.0-rc.3.26522.148, 9.0.22, 10.0.14 |
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