HIGH 8.8 Microsoft

CVE-2026-47300

ASP.NET Core Elevation of Privilege Vulnerability

Microsoft Security Update 2026-Jul: ASP.NET Core Elevation of Privilege Vulnerability

Affected Products

.NET 10.0 installed on Linux
.NET 10.0 installed on Mac OS
.NET 8.0 installed on Windows
.NET 8.0 installed on Mac OS
.NET 8.0 installed on Linux
.NET 9.0 installed on Linux
.NET 9.0 installed on Mac OS
.NET 9.0 installed on Windows

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300
https://nvd.nist.gov/vuln/detail/CVE-2026-47300

Published: 2026-07-14 · Source: Microsoft · Feed updated: 2026-08-04

This high severity vulnerability with a CVSS score of 8.8 was published on 2026-07-14 via Microsoft. Affected: .NET 10.0 installed on Linux, .NET 10.0 installed on Mac OS, .NET 8.0 installed on Windows and 5 more.

vulnfeed aggregates 9166 vulnerabilities from NVD, CISA KEV, Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.