What is CVE-2026-45490?

CVE-2026-45490 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. .NET SDK Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-45490 cover?

CVE-2026-45490 covers the following CVE IDs: CVE-2026-45490. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-45490?

CVE-2026-45490 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-45490?

CVE-2026-45490 affects 3 products, including: .NET 10.0 installed on Windows; .NET 8.0 installed on Windows; .NET 9.0 installed on Windows.

CVE-2026-45490HighCVSS 7.8

.NET SDK Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 10, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-45490 →

📋 Description

Improper authorization in .NET allows an authorized attacker to elevate privileges locally.

🎯 Affected products3

.NET 10.0 installed on Windows
.NET 8.0 installed on Windows
.NET 9.0 installed on Windows

✅ Remediation

KB5097148 (Security Update) — fixed build 10.0.9 KB5097149 (Security Update) — fixed build 8.0.28 KB5097150 (Security Update) — fixed build 9.0.17

🔗 References (7)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490
patchhttps://dotnet.microsoft.com/download/dotnet/10.0
referencehttps://support.microsoft.com/help/5097148
patchhttps://dotnet.microsoft.com/download/dotnet/8.0
referencehttps://support.microsoft.com/help/5097149
patchhttps://dotnet.microsoft.com/download/dotnet/9.0
referencehttps://support.microsoft.com/help/5097150