Race condition in ASP.NET Core allows privilege elevation
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
ASP.NET Core versions from 8.0 before 8.0.32, from 9.0 before 9.0.21, from 10.0 before 10.0.13 and from 11.0 before 11.0.0-rc.2 are affected, along with Visual Studio 2022 17.14 before 17.14.42 and Visual Studio 2026 18.10 before 18.10.4. Improper synchronization of a shared resource (CWE-362) causes a race condition that lets an authorized attacker escalate privileges over a network.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | ASP.NET Core 10.0 | 10.0 to before 10.0.13 | 10.0.13 | Patch available | CNA |
| Microsoft | ASP.NET Core 11.0 | 11.0 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | CNA |
| Microsoft | ASP.NET Core 8.0 | 8.0 to before 8.0.32 | 8.0.32 | Patch available | CNA |
| Microsoft | ASP.NET Core 9.0 | 9.0 to before 9.0.21 | 9.0.21 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 to before 17.14.42 | 17.14.42 | Patch available | CNA |
| Microsoft | Microsoft Visual Studio 2026 version 18.10 | 18.10.0 to before 18.10.4 | 18.10.4 | Patch available | CNA |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) | 8.0.0 to before 8.0.32 | 8.0.32 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) | 10.0.0 to before 10.0.13 | 10.0.13 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) | 9.0.0 to before 9.0.21 | 9.0.21 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
| — | Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) | 11.0.0-preview.1 to before 11.0.0-rc.2 | 11.0.0-rc.2 | Patch available | GHSA-494h-xx7x-5frh |
- ASP.NET Core 10.0 VendorMicrosoft Affected 10.0 to before 10.0.13 Fixed in 10.0.13 Patch available CNA
- ASP.NET Core 11.0 VendorMicrosoft Affected 11.0 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available CNA
- ASP.NET Core 8.0 VendorMicrosoft Affected 8.0 to before 8.0.32 Fixed in 8.0.32 Patch available CNA
- ASP.NET Core 9.0 VendorMicrosoft Affected 9.0 to before 9.0.21 Fixed in 9.0.21 Patch available CNA
- Microsoft Visual Studio 2022 version 17.14 VendorMicrosoft Affected 17.14.0 to before 17.14.42 Fixed in 17.14.42 Patch available CNA
- Microsoft Visual Studio 2026 version 18.10 VendorMicrosoft Affected 18.10.0 to before 18.10.4 Fixed in 18.10.4 Patch available CNA
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-494h-xx7x-5frh
Remediation
Upgrade ASP.NET Core to 8.0.32, 9.0.21, 10.0.13 or 11.0.0-rc.2, and Visual Studio 2022 to 17.14.42 or Visual Studio 2026 to 18.10.4. Red Hat fixes this in RHSA-2026:89735, RHSA-2026:88474, RHSA-2026:88422, RHSA-2026:88425, RHSA-2026:88424, RHSA-2026:86594, RHSA-2026:86193, RHSA-2026:86171, RHSA-2026:86169, RHSA-2026:86192, RHSA-2026:86170, RHSA-2026:86172, RHSA-2026:86195 and RHSA-2026:86168.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA ASP.NET Core 10.0 (Microsoft) Fixed in 10.0.13
- Fix · CNA ASP.NET Core 11.0 (Microsoft) Fixed in 11.0.0-rc.2
- Fix · CNA ASP.NET Core 8.0 (Microsoft) Fixed in 8.0.32
- Fix · CNA ASP.NET Core 9.0 (Microsoft) Fixed in 9.0.21
- Fix · CNA Microsoft Visual Studio 2022 version 17.14 (Microsoft) Fixed in 17.14.42
- Fix · CNA Microsoft Visual Studio 2026 version 18.10 (Microsoft) Fixed in 18.10.4
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Fixed in 8.0.32 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Fixed in 10.0.13 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Fixed in 9.0.21 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
- Fix · GHSA-494h-xx7x-5frh Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
Red Hat 14 advisories
- RHSA-2026:89735 Released 2026-10-27 · Red Hat rating Critical.NET 9.0 security update
- Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-9.0-source-built-artifacts-9.0.122-1.el9_6
- Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-9.0-9.0.21-1.el9_6, aspnetcore-runtime-dbg-9.0-9.0.21-1.el9_6, aspnetcore-targeting-pack-9.0-9.0.21-1.el9_6 +12
- RHSA-2026:88474 Released 2026-10-22 · Red Hat rating Critical.NET 8.0 security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-8.0-8.0.32-1.el10_0, aspnetcore-runtime-dbg-8.0-8.0.32-1.el10_0, aspnetcore-targeting-pack-8.0-8.0.32-1.el10_0 +9
- Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-8.0-source-built-artifacts-8.0.132-1.el10_0
- RHSA-2026:88422 Released 2026-10-22 · Red Hat rating Critical.NET 8.0 security update
- Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-8.0-source-built-artifacts-8.0.132-1.el9_6
- Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-8.0-8.0.32-1.el9_6, aspnetcore-runtime-dbg-8.0-8.0.32-1.el9_6, aspnetcore-targeting-pack-8.0-8.0.32-1.el9_6 +9
Show 11 more Red Hat advisories
- RHSA-2026:88425 Released 2026-10-22 · Red Hat rating Critical.NET 8.0 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.4) aspnetcore-runtime-8.0-8.0.32-1.el9_4, aspnetcore-runtime-dbg-8.0-8.0.32-1.el9_4, aspnetcore-targeting-pack-8.0-8.0.32-1.el9_4 +11
- RHSA-2026:88424 Released 2026-10-22 · Red Hat rating Critical.NET 9.0 security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-9.0-9.0.21-1.el10_0, aspnetcore-runtime-dbg-9.0-9.0.21-1.el10_0, aspnetcore-targeting-pack-9.0-9.0.21-1.el10_0 +12
- Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-9.0-source-built-artifacts-9.0.122-1.el10_0
- RHSA-2026:86594 Released 2026-10-21 · Red Hat rating Critical.NET 8.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-8.0-8.0.32-2.el8_10, aspnetcore-runtime-dbg-8.0-8.0.32-2.el8_10, aspnetcore-targeting-pack-8.0-8.0.32-2.el8_10 +9
- Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-8.0-source-built-artifacts-8.0.132-2.el8_10
- RHSA-2026:86193 Released 2026-10-20 · Red Hat rating Critical.NET 10.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-10.0-10.0.13-1.el9_8, aspnetcore-runtime-dbg-10.0-10.0.13-1.el9_8, aspnetcore-targeting-pack-10.0-10.0.13-1.el9_8 +11
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-10.0-source-built-artifacts-10.0.113-1.el9_8
- RHSA-2026:86171 Released 2026-10-20 · Red Hat rating Critical.NET 9.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-9.0-9.0.21-1.el9_8, aspnetcore-runtime-dbg-9.0-9.0.21-1.el9_8, aspnetcore-targeting-pack-9.0-9.0.21-1.el9_8 +11
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-9.0-source-built-artifacts-9.0.122-1.el9_8
- RHSA-2026:86169 Released 2026-10-20 · Red Hat rating Critical.NET 8.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-8.0-8.0.32-1.el9_8, aspnetcore-runtime-dbg-8.0-8.0.32-1.el9_8, aspnetcore-targeting-pack-8.0-8.0.32-1.el9_8 +9
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-8.0-source-built-artifacts-8.0.132-1.el9_8
- RHSA-2026:86192 Released 2026-10-20 · Red Hat rating Critical.NET 10.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-10.0-10.0.13-1.el8_10, aspnetcore-runtime-dbg-10.0-10.0.13-1.el8_10, aspnetcore-targeting-pack-10.0-10.0.13-1.el8_10 +11
- Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-10.0-source-built-artifacts-10.0.113-1.el8_10
- RHSA-2026:86170 Released 2026-10-20 · Red Hat rating Critical.NET 9.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-9.0-9.0.21-1.el8_10, aspnetcore-runtime-dbg-9.0-9.0.21-1.el8_10, aspnetcore-targeting-pack-9.0-9.0.21-1.el8_10 +11
- Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-9.0-source-built-artifacts-9.0.122-1.el8_10
- RHSA-2026:86172 Released 2026-10-20 · Red Hat rating Critical.NET 9.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-9.0-9.0.21-1.el10_2, aspnetcore-runtime-dbg-9.0-9.0.21-1.el10_2, aspnetcore-targeting-pack-9.0-9.0.21-1.el10_2 +11
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-9.0-source-built-artifacts-9.0.122-1.el10_2
- RHSA-2026:86195 Released 2026-10-20 · Red Hat rating Critical.NET 10.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-10.0-10.0.13-1.el10_2, aspnetcore-runtime-dbg-10.0-10.0.13-1.el10_2, aspnetcore-targeting-pack-10.0-10.0.13-1.el10_2 +11
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-10.0-source-built-artifacts-10.0.113-1.el10_2
- RHSA-2026:86168 Released 2026-10-20 · Red Hat rating Critical.NET 8.0 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-8.0-8.0.32-1.el10_2, aspnetcore-runtime-dbg-8.0-8.0.32-1.el10_2, aspnetcore-targeting-pack-8.0-8.0.32-1.el10_2 +9
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-8.0-source-built-artifacts-8.0.132-1.el10_2
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat CodeReady Linux Builder EUS (v.9.6) | Fixed | RHSA-2026:88422, RHSA-2026:89735 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:86168, RHSA-2026:86172, RHSA-2026:86195 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:86170, RHSA-2026:86192, RHSA-2026:86594 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:86169, RHSA-2026:86171, RHSA-2026:86193 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:88425 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:88424, RHSA-2026:88474 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:88422, RHSA-2026:89735 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:86170, RHSA-2026:86192, RHSA-2026:86594 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:86168, RHSA-2026:86172, RHSA-2026:86195 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:86169, RHSA-2026:86171, RHSA-2026:86193 |
| Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | Fixed | RHSA-2026:88424, RHSA-2026:88474 |
Not affected: 1 product
- Red Hat Hardened Images
Timeline
- 2026-10-13 Threatist record created from CVE-2026-70183
- 2026-10-13 Alias added: GHSA-494h-xx7x-5frh
- 2026-10-13 Fix available: NuGet/[email protected], NuGet/[email protected], NuGet/[email protected] +45 · GHSA-494h-xx7x-5frh
- 2026-10-13 CVSS score added · GHSA-494h-xx7x-5frh
- 2026-10-13 Weakness changed · GHSA-494h-xx7x-5frh
- 2026-10-13 4 new references · GHSA-494h-xx7x-5frh
- 2026-10-13 CISA SSVC decision points changed
- 2026-10-14 Priority changed: MEDIUM → LOW
- 2026-10-14 CISA SSVC decision points changed
- 2026-10-16 Affected versions changed · Red Hat
- 2026-10-16 CVSS score added · Red Hat
- 2026-10-19 2 new references · GHSA-494h-xx7x-5frh
- 2026-10-21 Fix available: RHSA-2026:86168 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86169 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86170 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86171 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86192 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86193 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86172 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86195 · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86594 · Red Hat
- 2026-10-21 Fix available: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux AppStream (v. 9) +3 · Red Hat
- 2026-10-23 Fix available: RHSA-2026:88422 · Red Hat
- 2026-10-23 Fix available: RHSA-2026:88424 · Red Hat
- 2026-10-23 Fix available: RHSA-2026:88474 · Red Hat
- 2026-10-23 Fix available: RHSA-2026:88425 · Red Hat
- 2026-10-23 Fix available: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux AppStream EUS (v. 10.0) +2 · Red Hat
- 2026-10-29 Affected versions changed · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89735 · Red Hat
References
More Microsoft vulnerabilities
- TI-2026-42212 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2026-37256 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2026-16982 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2025-36863 Windows Server Update Service (WSUS) Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2025-33671 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-70183 · CVE Program
- CVE-2026-70183 · NVD
- FIRST EPSS
- GHSA-494h-xx7x-5frh · GitHub Advisory Database · CC BY 4.0
- CVE-2026-70183 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences