CVE-2026-85363 · GHSA-f63g-mx39-3r38
Microsoft Security Advisory CVE-2026-85363 - .NET and Visual Studio Remote Code Execution Vulnerability
- Risk score
- 79/100
- CVSS
- 8.8 v3.1
- Exploit chance (30 days)
- 0.7%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to elevate privileges over a network.
- Affected
- Microsoft.WindowsDesktop.App.Runtime.win-arm64 (nuget) >= 8.0.0, <= 8.0.31; Microsoft.WindowsDesktop.App.Runtime.win-x64 (nuget) >= 8.0.0, <= 8.0.31; Microsoft.WindowsDesktop.App.Runtime.win-x86 (nuget) >= 8.0.0, <= 8.0.31; Microsoft.WindowsDesktop.App.Runtime.win-arm64 (nuget) >= 10.0.0, <= 10.0.12
- Fix
- Upgrade Microsoft.WindowsDesktop.App.Runtime.win-arm64 to 8.0.32 or 10.0.13 or 9.0.21; Microsoft.WindowsDesktop.App.Runtime.win-x64 to 8.0.32 or 10.0.13 or 9.0.21; Microsoft.WindowsDesktop.App.Runtime.win-x86 to 8.0.32 or 10.0.13 (whichever matches your release line) or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.8 high
- Remotely exploitable without logging in
- On your watchlist: .net, NuGet
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| Microsoft.WindowsDesktop.App.Runtime.win-arm64 | nuget | >= 8.0.0, <= 8.0.31 | 8.0.32 |
| Microsoft.WindowsDesktop.App.Runtime.win-x64 | nuget | >= 8.0.0, <= 8.0.31 | 8.0.32 |
| Microsoft.WindowsDesktop.App.Runtime.win-x86 | nuget | >= 8.0.0, <= 8.0.31 | 8.0.32 |
| Microsoft.WindowsDesktop.App.Runtime.win-arm64 | nuget | >= 10.0.0, <= 10.0.12 | 10.0.13 |
| Microsoft.WindowsDesktop.App.Runtime.win-x64 | nuget | >= 10.0.0, <= 10.0.12 | 10.0.13 |
| Microsoft.WindowsDesktop.App.Runtime.win-x86 | nuget | >= 10.0.0, <= 10.0.12 | 10.0.13 |
| Microsoft.WindowsDesktop.App.Runtime.win-arm64 | nuget | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| Microsoft.WindowsDesktop.App.Runtime.win-x64 | nuget | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| Microsoft.WindowsDesktop.App.Runtime.win-x86 | nuget | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| Microsoft.WindowsDesktop.App.Runtime.win-arm64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.WindowsDesktop.App.Runtime.win-x64 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| Microsoft.WindowsDesktop.App.Runtime.win-x86 | nuget | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
References
- https://github.com/advisories/GHSA-f63g-mx39-3r38
- https://github.com/dotnet/wpf/security/advisories/GHSA-f63g-mx39-3r38
- https://github.com/dotnet/announcements/issues/469
- https://github.com/dotnet/wpf/issues/12020
- https://github.com/advisories/GHSA-f63g-mx39-3r38
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85363
Original description
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to elevate privileges over a network.
Last activity 13 Oct 2026. Patch Forecast updates every hour.