CVE-2026-96225 .NET Elevation of Privilege Vulnerability
High 7.8
Published
Updated
Check this codebase for CVE-2026-96225 and fix it if it is affected.
What it is: CVE-2026-96225 is a high-severity path traversal vulnerability in Microsoft .NET 10.0 runtime, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-96225 in the wild and no public exploit code.
Affected packages and fixed versions:
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 10.0.0; fixed in 10.0.13
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 10.0.0; fixed in 10.0.13
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.2
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.2
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 8.0.0; fixed in 8.0.32
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 8.0.0; fixed in 8.0.32
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 9.0.0; fixed in 9.0.21
- Microsoft.NETCore.App.Runtime.linux-arm (NuGet): affected from 9.0.0; fixed in 9.0.21
- Microsoft.NETCore.App.Runtime.linux-arm64 (NuGet): affected from 10.0.0; fixed in 10.0.13
- Microsoft.NETCore.App.Runtime.linux-arm64 (NuGet): affected from 10.0.0; fixed in 10.0.13
- Microsoft.NETCore.App.Runtime.linux-arm64 (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.2
- Microsoft.NETCore.App.Runtime.linux-arm64 (NuGet): affected from 11.0.0-preview.1; fixed in 11.0.0-rc.2
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-96225/ (Markdown: https://insights.sbomify.com/CVE-2026-96225/index.md)
An authorized local attacker can elevate privileges via improper link resolution in the .NET runtime.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-96225?
CVE-2026-96225 is a high-severity path traversal vulnerability in Microsoft .NET 10.0 runtime, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.
Weakness: CWE-59
Which versions are affected by CVE-2026-96225?
40 open source packages ship an affected version, including Microsoft.NETCore.App.Runtime.linux-arm, Microsoft.NETCore.App.Runtime.linux-arm64 and Microsoft.NETCore.App.Runtime.linux-musl-arm.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 8.0.0 | 8.0.32 |
34 more packages
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-arm NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-arm64 NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-musl-arm NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-musl-arm64 NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 10.0.0 | 10.0.13 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 11.0.0-preview.1 | 11.0.0-rc.2 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 8.0.0 | 8.0.32 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 9.0.0 | 9.0.21 |
Microsoft.NETCore.App.Runtime.linux-musl-x64 NuGet | From 9.0.0 | 9.0.21 |
How do I fix CVE-2026-96225?
Upgrade Microsoft.NETCore.App.Runtime.linux-arm to a fixed version for your release line: 10.0.13, 11.0.0-rc.2, 8.0.32 or 9.0.21.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-96225 being exploited?
There is no known exploitation of CVE-2026-96225 in the wild and no public exploit code.
Sources
Also known as GHSA-w6wh-p4g7-mpj2, UBUNTU-CVE-2026-96225.