# CVE-2026-45490: .NET SDK Elevation of Privilege Vulnerability

CVE-2026-45490 is fixed in 65 products on 3 platforms, first by KB5097148, released June 9, 2026. 3 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-45490
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0038
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Jun 9, 2026
- Weakness: Improper Authorization
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490

## Description

<p>Improper authorization in .NET allows an authorized attacker to elevate privileges locally.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | .NET 10.0 runtime installed on Windows |  | [KB5097148](https://patchblox.com/security/data/fix/microsoft/kb5097148.md) | Jun 9, 2026 |
| Microsoft | .NET 8.0 runtime installed on Windows |  | [KB5097149](https://patchblox.com/security/data/fix/microsoft/kb5097149.md) | Jun 9, 2026 |
| Microsoft | .NET 9.0 runtime installed on Windows |  | [KB5097150](https://patchblox.com/security/data/fix/microsoft/kb5097150.md) | Jun 9, 2026 |
| Windows apps | Microsoft .NET Windows Desktop Runtime 8.0 | 8.0.30 | [Microsoft .NET Windows Desktop Runtime 8.0 8.0.30](https://patchblox.com/security/data/fix/windows-app/microsoft.dotnet.desktopruntime.8-8.0.30.md) | Jul 23, 2026 |
| Linux | aspnetcore-runtime-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | aspnetcore-runtime-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | aspnetcore-runtime-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | aspnetcore-runtime-dbg-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | aspnetcore-runtime-dbg-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | aspnetcore-runtime-dbg-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | aspnetcore-targeting-pack-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | aspnetcore-targeting-pack-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | aspnetcore-targeting-pack-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-apphost-pack-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-apphost-pack-10.0-debuginfo amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-apphost-pack-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-apphost-pack-8.0-debuginfo amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-apphost-pack-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-apphost-pack-9.0-debuginfo amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-host amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-host-debuginfo amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-hostfxr-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-hostfxr-10.0-debuginfo amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-hostfxr-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-hostfxr-8.0-debuginfo amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-hostfxr-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-hostfxr-9.0-debuginfo amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-10.0-debuginfo amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-8.0-debuginfo amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-9.0-debuginfo amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-dbg-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-dbg-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-runtime-dbg-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-10.0 amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-10.0-debuginfo amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-10.0-source-built-artifacts amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-8.0 amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-8.0-debuginfo amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-8.0-source-built-artifacts amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-9.0 amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-9.0-debuginfo amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-9.0-source-built-artifacts amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-aot-10.0 amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-aot-10.0-debuginfo amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-aot-9.0 amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-aot-9.0-debuginfo amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-dbg-10.0 amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-dbg-8.0 amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-sdk-dbg-9.0 amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-targeting-pack-10.0 amzn 2023 | 10.0.9-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-targeting-pack-8.0 amzn 2023 | 8.0.28-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-targeting-pack-9.0 amzn 2023 | 9.0.17-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet-templates-10.0 amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet-templates-8.0 amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet-templates-9.0 amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | dotnet10.0-debuginfo amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet10.0-debugsource amzn 2023 | 10.0.109-1.amzn2023.0.1 | [ALAS2023-2026-1867](https://patchblox.com/security/data/fix/linux/alas2023-2026-1867.md) | Jun 22, 2026 |
| Linux | dotnet8.0-debuginfo amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet8.0-debugsource amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |
| Linux | dotnet9.0-debugsource amzn 2023 | 9.0.118-1.amzn2023.0.2 | [ALAS2023-2026-1868](https://patchblox.com/security/data/fix/linux/alas2023-2026-1868.md) | Jun 22, 2026 |
| Linux | netstandard-targeting-pack-2.1 amzn 2023 | 8.0.128-1.amzn2023.0.1 | [ALAS2023-2026-1869](https://patchblox.com/security/data/fix/linux/alas2023-2026-1869.md) | Jun 22, 2026 |

## No fix yet

| Platform | Product | Status |
|---|---|---|
| Windows apps | Microsoft Windows Desktop Runtime - 8.0.25 (arm64) | no-fix |
| Windows apps | Microsoft Windows Desktop Runtime - 8.0.25 (x64) | no-fix |
| Windows apps | Microsoft Windows Desktop Runtime - 8.0.25 (x86) | no-fix |

---

Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.