CVE-2026-47300

HIGH

Microsoft .NET 10.0 - ASP.NET Core Elevation of Privilege Vulnerability

Title source: rule
STIX 2.1

Description

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

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
ASP.NET Core Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300

Scores

CVSS v3 8.8
EPSS 0.0053
EPSS Percentile 41.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-303
Status published
Products (13)
microsoft/.net 8.0.0 - 8.0.29
Microsoft/.NET 10.0 10.0.0 - 10.0.10
Microsoft/.NET 10.0 10.0.0 - 10.0.6
Microsoft/.NET 8.0 8.0.0 - 8.0.29
Microsoft/.NET 9.0 9.0.0 - 9.0.18
Microsoft/Microsoft Visual Studio 2022 version 17.12 17.12.0 - 17.12.22
Microsoft/Microsoft Visual Studio 2022 version 17.14 17.14.0 - 17.14.36
Microsoft/Microsoft Visual Studio 2026 version 18.7 18.0 - 18.7.4
microsoft/visual_studio_2022 17.12.0 - 17.12.22
microsoft/visual_studio_2026 18.7.0 - 18.7.4
... and 3 more
Published Jul 14, 2026
Tracked Since Jul 15, 2026