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Microsoft Security Response CenterCVE-2026-105544

.NET Elevation of Privilege Vulnerability

HighVendor CVSS 7.5 / 10 1 CVE Published Nov 10, 2026 at 8:00 AM UTC
Get alerts for NET 8.0 installed on Windows

Summary

Improper access control in .NET allows an authorized attacker to elevate privileges locally.

Products covered

  • .NET 8.0 installed on Windows

  • .NET 8.0 installed on Linux

  • .NET 8.0 installed on Mac OS

  • .NET 9.0 installed on Windows

  • .NET 9.0 installed on Linux

  • .NET 9.0 installed on Mac OS

  • .NET 10.0 installed on Windows

  • .NET 10.0 installed on Linux

Show 8 more products

  • .NET 10.0 installed on Mac OS

  • .NET 11.0 installed on Windows

  • .NET 11.0 installed on Linux

  • .NET 11.0 installed on Mac OS

  • Microsoft Visual Studio 2022 version 17.14

  • Microsoft Visual Studio 2026 version 18.11

  • Microsoft Visual Studio 2026 version 18.12

  • Microsoft.TestPlatform.CLI

Remediation

Release Notes Install KB5135243. Install KB5135242. Install KB5135241.

Vendor-listed fixes

  • 8.0.428

  • 9.0.321

  • 10.0.404

  • 11.0.100

  • 17.14.45

  • 18.11.4

  • 18.12.0

  • 18.11.1

CVEs in this advisory 1

CVE-2026-105544

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

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