CVE-2026-45490 .NET SDK Elevation of Privilege Vulnerability
An authorized local attacker can elevate privileges due to improper authorization in the .NET SDK.
- 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-2026-45490?
CVE-2026-45490 is a high-severity vulnerability in Microsoft .Net, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
Which versions are affected by CVE-2026-45490?
2 open source packages ship an affected version, including dotnet and dotnet-sdk. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
dotnet Bitnami | From 8.0.0 | 8.0.28, 9.0.17, 10.0.9 |
dotnet-sdk Bitnami | From 8.0.0 | 8.0.28, 9.0.17, 10.0.9 |
Products include Microsoft .Net.
How do I fix CVE-2026-45490?
Upgrade dotnet to a fixed version for your release line: 8.0.28, 9.0.17 or 10.0.9.
Is CVE-2026-45490 being exploited?
There is no known exploitation of CVE-2026-45490 in the wild and no public exploit code.
Other vulnerabilities in Microsoft .Net
- CVE-2024-43498 .NET and Visual Studio Remote Code Execution Vulnerability
- CVE-2024-0057 NET, .NET Framework, and Visual Studio Security Feature Bypass Vulnerability
- CVE-2026-96957 .NET Security Feature Bypass Vulnerability
- CVE-2026-69439 .NET and Visual Studio Elevation of Privilege Vulnerability
- CVE-2026-71328 .NET and Visual Studio Remote Code Execution Vulnerability
Sources
Also known as BIT-dotnet-2026-45490, BIT-dotnet-sdk-2026-45490, GHSA-77gm-m6x5-jf4f, MINI-q752-6w4w-4fj5, MINI-qqfw-h489-7vq4, UBUNTU-CVE-2026-45490.