Authentication bypass by assumed-immutable data 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.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Microsoft .NET 10.0 affected
Version Status Constraints
10.0.0 affected < 10.0.6
Microsoft .NET 8.0 affected
Version Status Constraints
8.0.0 affected < 8.0.29
Microsoft .NET 9.0 affected
Version Status Constraints
9.0.0 affected < 9.0.18
Microsoft Microsoft Visual Studio 2022 version 17.12 affected
Version Status Constraints
17.12.0 affected < 17.12.22
Microsoft Microsoft Visual Studio 2022 version 17.14 affected
Version Status Constraints
17.14.0 affected < 17.14.36
Microsoft Microsoft Visual Studio 2026 version 18.7 affected
Version Status Constraints
18.0 affected < 18.7.4

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Microsoft Subscribe
.net Subscribe
Visual Studio 2022 Subscribe
Visual Studio 2026 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47303 cve-icon
History

Tue, 14 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 14 Jul 2026 19:00:00 +0000

Type Values Removed Values Added
Description Authentication bypass by assumed-immutable data 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-302
CWE-863
CWE-90
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
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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-07-14T19:38:06.521Z

Reserved: 2026-05-18T23:53:33.898Z

Link: CVE-2026-47303

cve-icon Vulnrichment

Updated: 2026-07-14T19:11:27.008Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses