High MSRC-CVE-2026-26127 1 CVE

.NET Denial of Service Vulnerability

Published Mar 10, 2026 · Updated Mar 10, 2026

Vendor: Microsoft

Summary

Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited, publicly disclosed before the fix — Exploitation Unlikely. Customer action: Required.

Details

Security updates
10.0.4 — https://support.microsoft.com/help/5081276
9.0.14 — https://support.microsoft.com/help/5081278

Vulnerabilities 1

High 7.5

CVE-2026-26127

.NET Denial of Service Vulnerability

Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

Microsoft .NET 9.0 .NET 10.0 Microsoft.Bcl.Memory Ubuntu Alpine Wolfi NuGet

Mar 10, 2026

Revision history

2026-03-10 #1
Information published.

References

CVE-2026-26127 .NET Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26127
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