Incorrect authorization in Visual Studio - CVE-2026-114146

Vulnerability identifier: #VU164964

CSH Severity: Medium

CVSS v4: 8.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-114146

CWE-ID: CWE-863

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to escalate privileges and perform actions with another user's application privileges.

The vulnerability exists due to incorrect authorization in ASP.NET Core when handling requests triggered by a specially crafted link. A remote user can convince a privileged user to follow such a link to an affected application to perform actions with that user's application privileges.

Visual Studio
Ubuntu
aspnetcore-runtime-8.0 (Ubuntu package)
dotnet-hostfxr-8.0 (Ubuntu package)
dotnet-runtime-8.0 (Ubuntu package)
dotnet-host-8.0 (Ubuntu package)
dotnet-sdk-8.0 (Ubuntu package)
dotnet8 (Ubuntu package)
aspnetcore-runtime-10.0 (Ubuntu package)
dotnet-host-10.0 (Ubuntu package)
dotnet-hostfxr-10.0 (Ubuntu package)
dotnet-runtime-10.0 (Ubuntu package)
dotnet-sdk-10.0 (Ubuntu package)
dotnet-sdk-aot-10.0 (Ubuntu package)
dotnet10 (Ubuntu package)
aspnetcore-runtime-11.0 (Ubuntu package)
dotnet-host-11.0 (Ubuntu package)
dotnet-hostfxr-11.0 (Ubuntu package)
dotnet-runtime-11.0 (Ubuntu package)
dotnet-sdk-11.0 (Ubuntu package)
dotnet-sdk-aot-11.0 (Ubuntu package)
dotnet11 (Ubuntu package)

Install security update from vendor's website.

Visual Studio - update to 17.14.45
aspnetcore-runtime-8.0 (Ubuntu package) - addressed in versions 8.0.34-0ubuntu1~22.04.1, 8.0.34-0ubuntu1~24.04.1
dotnet-hostfxr-8.0 (Ubuntu package) - addressed in versions 8.0.34-0ubuntu1~22.04.1, 8.0.34-0ubuntu1~24.04.1
dotnet-runtime-8.0 (Ubuntu package) - addressed in versions 8.0.34-0ubuntu1~22.04.1, 8.0.34-0ubuntu1~24.04.1
dotnet-host-8.0 (Ubuntu package) - addressed in versions 8.0.34-0ubuntu1~22.04.1, 8.0.34-0ubuntu1~24.04.1
dotnet-sdk-8.0 (Ubuntu package) - addressed in versions 8.0.134-0ubuntu1~22.04.1, 8.0.134-0ubuntu1~24.04.1
dotnet8 (Ubuntu package) - addressed in versions 8.0.134-8.0.34-0ubuntu1~22.04.1, 8.0.134-8.0.34-0ubuntu1~24.04.1
aspnetcore-runtime-10.0 (Ubuntu package) - addressed in versions 10.0.15-0ubuntu1~24.04.1, 10.0.15-0ubuntu1~26.04.1, 10.0.15-0ubuntu1~26.10.1
dotnet-host-10.0 (Ubuntu package) - addressed in versions 10.0.15-0ubuntu1~24.04.1, 10.0.15-0ubuntu1~26.04.1, 10.0.15-0ubuntu1~26.10.1
dotnet-hostfxr-10.0 (Ubuntu package) - addressed in versions 10.0.15-0ubuntu1~24.04.1, 10.0.15-0ubuntu1~26.04.1, 10.0.15-0ubuntu1~26.10.1
dotnet-runtime-10.0 (Ubuntu package) - addressed in versions 10.0.15-0ubuntu1~24.04.1, 10.0.15-0ubuntu1~26.04.1, 10.0.15-0ubuntu1~26.10.1
dotnet-sdk-10.0 (Ubuntu package) - addressed in versions 10.0.115-0ubuntu1~24.04.1, 10.0.115-0ubuntu1~26.04.1, 10.0.115-0ubuntu1~26.10.1
dotnet-sdk-aot-10.0 (Ubuntu package) - addressed in versions 10.0.115-0ubuntu1~24.04.1, 10.0.115-0ubuntu1~26.04.1, 10.0.115-0ubuntu1~26.10.1
dotnet10 (Ubuntu package) - addressed in versions 10.0.115-10.0.15-0ubuntu1~24.04.1, 10.0.115-10.0.15-0ubuntu1~26.04.1, 10.0.115-10.0.15-0ubuntu1~26.10.1
aspnetcore-runtime-11.0 (Ubuntu package) - update to 11.0.0-0ubuntu1~26.10.1
dotnet-host-11.0 (Ubuntu package) - update to 11.0.0-0ubuntu1~26.10.1
dotnet-hostfxr-11.0 (Ubuntu package) - update to 11.0.0-0ubuntu1~26.10.1
dotnet-runtime-11.0 (Ubuntu package) - update to 11.0.0-0ubuntu1~26.10.1
dotnet-sdk-11.0 (Ubuntu package) - update to 11.0.100-0ubuntu1~26.10.1
dotnet-sdk-aot-11.0 (Ubuntu package) - update to 11.0.100-0ubuntu1~26.10.1
dotnet11 (Ubuntu package) - update to 11.0.100-11.0.0-0ubuntu1~26.10.1

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-114146
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114146

• Multiple vulnerabilities in Visual Studio
• Ubuntu update for dotnet10, dotnet11, dotnet8