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Microsoft Security Response CenterCVE-2026-47304

.NET Security Feature Bypass Vulnerability

HighVendor CVSS 8.1 / 10 1 CVE Published Jul 14, 2026 at 7:00 AM UTC
Get alerts for NET 10.0 installed on Mac OS

Summary

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

Products covered

  • .NET 10.0 installed on Mac OS

  • .NET 10.0 installed on Linux

  • .NET 8.0 installed on Windows

  • .NET 8.0 installed on Linux

  • .NET 8.0 installed on Mac OS

  • .NET 9.0 installed on Linux

  • .NET 9.0 installed on Mac OS

  • .NET 9.0 installed on Windows

Show 62 more products

  • Microsoft Visual Studio 2026 version 18.5

  • Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)

  • Microsoft Visual Studio 2022 version 17.14

  • Microsoft Visual Studio 2022 version 17.12

  • Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)

  • Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems

  • Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems

  • Microsoft .NET Framework 4.8 on Windows Server 2016

  • Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)

  • Microsoft .NET Framework 4.8 on Windows Server 2012

  • Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)

  • Microsoft .NET Framework 4.8 on Windows Server 2012 R2

  • Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation)

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016

  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation)

  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012

  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation)

  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2

  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation)

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation)

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 (Server Core installation)

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems

  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025

  • Microsoft .NET Framework 3.5 on Windows Server 2012

  • Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation)

  • Microsoft .NET Framework 3.5 on Windows Server 2012 R2

  • Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation)

  • Microsoft .NET Framework 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems

  • Microsoft .NET Framework 3.5 on Windows 11 version 26H1 for x64-based Systems

  • Microsoft Visual Studio 2026 version 18.7

  • Microsoft .NET Framework 3.5 on Windows 11 Version 26H1 for ARM64-based Systems

  • Microsoft .NET Framework 4.8.1 on Windows 11 version 26H1 for x64-based Systems

Remediation

Release Notes Install KB5104034. Install KB5104032. Install KB5104033. Install KB5101007. Install KB5101009. Install KB5101011. Install KB5101008. Install KB5101010. Install KB5101006. Install KB5100989. Install KB5099535. Install KB5100990. Install KB5100991. Install KB5101005. Install KB5101000. Install KB5101003. Install KB5100998. Install KB5101004. Install KB5101001. Install KB5100984. Install KB5100985. Install KB5101002. Install KB5101014.

Vendor-listed fixes

  • 10.0.10

  • 8.0.29

  • 9.0.18

  • 17.14.36

  • 17.12.22

  • 4.8.4803.0

  • 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0

  • 2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0

Show 9 more fixes

  • 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0

  • 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0

  • 4.7.4143.0

  • 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0

  • 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0

  • 2.0.50727.8983 & 3.0.30729.8978

  • 4.8.9340.0

  • 2.0.50727.9182 & 3.0.30729.9168

  • 18.7.4

CVEs in this advisory 1

CVE-2026-47304

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.

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