CVE-2026-70165 .NET Elevation of Privilege Vulnerability
Medium 6.7
Published
Updated
Check this codebase for CVE-2026-70165 and fix it if it is affected.
What it is: CVE-2026-70165 is a medium-severity vulnerability in Microsoft .NET 10.0 runtime, published on 13 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-70165 in the wild and no public exploit code.
Affected product: Microsoft .NET 10.0 runtime. No package-level version data is available, so check the vendor advisory linked from the reference page.
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-2026-70165/ (Markdown: https://insights.sbomify.com/CVE-2026-70165/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
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-70165?
CVE-2026-70165 is a medium-severity vulnerability in Microsoft .NET 10.0 runtime, published on 13 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
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-2026-70165?
How do I fix CVE-2026-70165?
No fix has been published for CVE-2026-70165 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-70165 being exploited?
There is no known exploitation of CVE-2026-70165 in the wild and no public exploit code.
Sources
Also known as UBUNTU-CVE-2026-70165.