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HIGH · 7.8

CVE-2026-50646

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

Vulnerability Description

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

CVSS Score

7.8

HIGH

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

Affected Products

VendorProductVersions
Microsoft.Net Framework4.8
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 11 26H1-
MicrosoftWindows Server 2022-
MicrosoftWindows 10 1809-
MicrosoftWindows Server 2019-
Microsoft.Net>= 8.0.0, < 8.0.29
MicrosoftWindows-
MicrosoftVisual Studio 2022>= 17.12.0, < 17.12.22
MicrosoftVisual Studio 2026>= 18.7.0, < 18.7.4

Related Weaknesses (CWE)

CWE-502CWE-693

References

FAQ

What is CVE-2026-50646?

CVE-2026-50646 is a vulnerability with a CVSS score of 7.8 (HIGH). Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

How severe is CVE-2026-50646?

CVE-2026-50646 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-50646?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft .Net Framework, Microsoft Windows 10 1607, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows 10 21H2.