Back to vendor advisories
Microsoft Security Response CenterCVE-2026-109475

.NET Denial of Service Vulnerability

HighVendor CVSS 7.5 / 10 1 CVE Published Nov 10, 2026 at 8:00 AM UTC

Summary

Stack-based buffer overflow in .NET allows an unauthorized attacker to deny service over a network.

Products covered

  • .NET 8.0 installed on Linux

  • .NET 9.0 installed on Linux

  • .NET 10.0 installed on Linux

  • .NET 11.0 installed on Linux

Remediation

Release Notes Install KB5135243. Install KB5135242. Install KB5135241.

Vendor-listed fixes

  • 8.0.34

  • 9.0.23

  • 10.0.15

  • 11.0.0

CVEs in this advisory 1

Updates

  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.