High MSRC-CVE-2026-109475 1 CVE

.NET Denial of Service Vulnerability

Published Nov 10, 2026 · Updated Nov 11, 2026 · Revision 2

Vendor: Microsoft

Summary

Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

Security updates
10.0.15 — https://support.microsoft.com/help/5135241
11.0.0 — https://github.com/dotnet/core/blob/main/release-notes/11.0/11.0.0/11.0.0.md
8.0.34 — https://support.microsoft.com/help/5135243
9.0.23 — https://support.microsoft.com/help/5135242

Vulnerabilities 1

High 7.5

CVE-2026-109475

.NET Denial of Service Vulnerability

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

Microsoft .NET 11.0 installed on Mac OS .NET 11.0 installed on Linux .NET 10.0 installed on Mac OS Linux macOS Ubuntu Alpine Wolfi NuGet

Nov 10, 2026

Revision history

2026-11-11 #2
Changes made to the security updates links and information. This is an informational change only.
2026-11-10 #1
Information published.

References

CVE-2026-109475 .NET Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109475
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss