.NET and Visual Studio Elevation of Privilege Vulnerability
CVE-2026-102869 · published 13 Oct 2026
How serious is it
- Severity: high, CVSS score 8.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-102869?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2: 3.0.0.0 to < 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
- Microsoft Microsoft .NET Framework 3.5 AND 4.7.2: 4.7.0 to < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
- Microsoft Microsoft .NET Framework 3.5 AND 4.8: 4.8.0 to < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
- Microsoft Microsoft .NET Framework 3.5 AND 4.8.1: 4.8.1 to < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
- Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: 4.7.0 to < 4.7.4150.0
- Microsoft Microsoft .NET Framework 4.8: 4.8.0 to < 4.8.4811.0
- Microsoft Microsoft .NET Framework 4.8.1: 4.8.0.0 to < 4.8.9363.0
- Microsoft Microsoft Visual Studio 2022 version 17.14: 17.14.0 to < 17.14.42
- Microsoft Microsoft Visual Studio 2026 version 18.10: 18.10.0 to < 18.10.4
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
Access of resource using incompatible type ('type confusion') in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
Merged from CVE List. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON