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Microsoft Security Response CenterCVE-2026-96229

.NET Information Disclosure Vulnerability

HighVendor CVSS 6.5 / 10 1 CVE Published Oct 13, 2026 at 7:00 AM UTC

Summary

Permissive list of allowed inputs in .NET allows an unauthorized attacker to disclose information over a network.

Products covered

  • Microsoft Visual Studio 2026 version 18.10

  • Microsoft Visual Studio 2022 version 17.14

  • .NET 11.0 installed on Windows

  • .NET 8.0 installed on Windows

  • .NET 9.0 installed on Windows

  • .NET 10.0 installed on Windows

Remediation

Release Notes Install KB5130034. Install KB5130035. Install KB5130036.

Vendor-listed fixes

  • 18.10.4

  • 17.14.42

  • 11.0.0-rc.2

  • 8.0.32

  • 9.0.21

  • 10.0.13

CVEs in this advisory 1

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.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.