Search threats, CVEs… ⌘K
Back to vendor advisories
Microsoft Security Response CenterCVE-2026-69806

.NET Elevation of Privilege Vulnerability

Exposure of sensitive information to an unauthorized actor in .NET allows an authorized attacker to elevate privileges locally.

Read the vendor bulletin Get alerts for Microsoft Visual Studio
7.0CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft Visual Studio 2026 version 18.9
  • Microsoft Visual Studio 2022 version 17.14
  • .NET 9.0 installed on Linux
  • .NET 10.0 installed on Linux
  • .NET 11.0 installed on Linux

Versions the vendor lists as fixed

  • 18.9.3
  • 17.14.40
  • 9.0.317
  • 10.0.111, 10.0.400
  • 11.0 RC1
Next step

What the vendor recommends

Release Notes Install KB5126105. Install KB5126106.

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.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-69806View CVSS, KEV, EPSS, and threat context
Keep investigating
See every advisory from this vendor