CVE-2026-47300 - Vulnerability Details - OpenCVE

Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Microsoft	.net Visual Studio 2022 Visual Studio 2026

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References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300

History

Tue, 14 Jul 2026 18:45:00 +0000

Type	Values Removed	Values Added
Description		Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Title		ASP.NET Core Elevation of Privilege Vulnerability
First Time appeared		Microsoft Microsoft .net Microsoft visual Studio 2022 Microsoft visual Studio 2026
Weaknesses		CWE-303
CPEs		cpe:2.3:a:microsoft:.net:::::::: cpe:2.3:a:microsoft:visual_studio_2022:::::::: cpe:2.3:a:microsoft:visual_studio_2026::::::::
Vendors & Products		Microsoft Microsoft .net Microsoft visual Studio 2022 Microsoft visual Studio 2026
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}`

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-07-14T18:20:12.225Z

Updated: 2026-07-14T19:38:04.810Z

Reserved: 2026-05-18T23:53:33.897Z

Link: CVE-2026-47300

Vulnrichment

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NVD

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Redhat

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OpenCVE Enrichment

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