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Microsoft Security Response CenterCVE-2026-50526

.NET Tampering Vulnerability

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.

Read the vendor bulletin Get alerts for Microsoft Visual Studio
7.0CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft Visual Studio 2022 version 17.12
  • .NET 9.0 installed on Mac OS
  • .NET 8.0 installed on Mac OS
  • .NET 9.0 installed on Linux
  • .NET 9.0 installed on Windows
  • .NET 8.0 installed on Linux
  • .NET 10.0 installed on Mac OS
  • .NET 8.0 installed on Windows
  • .NET 10.0 installed on Linux
  • Microsoft Visual Studio 2026 version 18.7
  • Microsoft Visual Studio 2022 version 17.14

Versions the vendor lists as fixed

  • 17.12.22
  • 9.0.18
  • 8.0.29
  • 10.0.10
  • 18.7.4
  • 17.14.36
Next step

What the vendor recommends

Release Notes Install KB5104033. Install KB5104032. Install KB5104034.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  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.

Vulnerabilities

CVEs named in this advisory

CVE-2026-50526View CVSS, KEV, EPSS, and threat context
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