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Microsoft Security Response CenterCVE-2026-45490

.NET SDK Elevation of Privilege Vulnerability

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

Read the vendor bulletin Get alerts for NET 10.0 installed on Windows
7.8CVSS out of 10High severity
Scope

What the vendor says is affected

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

Versions the vendor lists as fixed

  • 10.0.9
  • 8.0.28
  • 9.0.17
Next step

What the vendor recommends

Install KB5097148. Install KB5097149. Install KB5097150.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-45490View CVSS, KEV, EPSS, and threat context
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