CVE-2026-47304: .NET Security Feature Bypass Vulnerability

Overview

Severity

High (CVSS 8.1)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Security Feature Bypass

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Jul

Released

2026-07-14

Description

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

FAQ

What kind of security feature could be bypassed by successfully exploiting this vulnerability? The authentication feature could be bypassed as this vulnerability allows impersonation.

Affected Products (3)

Developer Tools

• Microsoft Visual Studio 2022 version 17.14
• Microsoft Visual Studio 2022 version 17.12
• Microsoft Visual Studio 2026 version 18.7

Security Updates (3)

• Release Notes
• Release Notes
• Release Notes

Acknowledgments

Levi Broderick

Revision History

• 2026-07-14: Information published.