Microsoft Security Response CenterCVE-2026-50526

.NET Tampering Vulnerability

HighVendor CVSS 7.0 / 10 1 CVE Published Jul 14, 2026 at 7:00 AM UTC

Summary

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

Show 3 more products

Release Notes Install KB5104033. Install KB5104032. Install KB5104034.

Update history

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Oct 28, 2026 at 10:00 PM UTC
- Added affected products: .NET 8.0 runtime installed on Linux, .NET 8.0 runtime installed on Mac OS, .NET 8.0 runtime installed on Windows, .NET 9.0 runtime installed on Linux, .NET 9.0 runtime installed on Mac OS.
- Removed affected products: .NET 8.0 installed on Linux, .NET 8.0 installed on Mac OS, .NET 8.0 installed on Windows, .NET 9.0 installed on Linux, .NET 9.0 installed on Mac OS.

Jul 14, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 28, 2026 at 11:20 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Nov 11, 2026 at 2:20 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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