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HIGH · 8.1

CVE-2026-47304

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

Vulnerability Description

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

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
Microsoft.Net Framework4.8.1
MicrosoftWindows 11 26H1-
MicrosoftWindows 10 1607-
MicrosoftWindows Server 2012-
MicrosoftWindows Server 2016-
MicrosoftWindows 10 21H2-
MicrosoftWindows 10 22H2-
MicrosoftWindows 11 23H2-
MicrosoftWindows 11 24H2-
MicrosoftWindows 11 25H2-
MicrosoftWindows Server 2022-
MicrosoftWindows Server 2025-
Microsoft.Net>= 8.0.0, < 8.0.29
AppleMacos-
LinuxLinux Kernel-
MicrosoftWindows-
MicrosoftWindows 10 1809-
MicrosoftWindows Server 2019-
MicrosoftVisual Studio 2017>= 15.0, <= 15.9
MicrosoftVisual Studio 2019>= 16.0, <= 16.11

Related Weaknesses (CWE)

CWE-345CWE-347

References

FAQ

What is CVE-2026-47304?

CVE-2026-47304 is a vulnerability with a CVSS score of 8.1 (HIGH). Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

How severe is CVE-2026-47304?

CVE-2026-47304 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-47304?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft .Net Framework, Microsoft Windows 11 26H1, Microsoft Windows 10 1607, Microsoft Windows Server 2012, Microsoft Windows Server 2016.