Denial of Service Vulnerability in ASP.NET Core by Microsoft
CVE-2026-26130

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Asp.net Core 10.0
Asp.net Core 8.0
Asp.net Core 9.0
Vendor
CVE Published:
10 March 2026

What is CVE-2026-26130?

The ASP.NET Core framework has a vulnerability that involves the unsupervised allocation of resources, potentially allowing an unauthorized attacker to execute a denial of service attack on a network. This flaw can lead to service disruption, affecting the availability of web applications and services dependent on the framework.

Affected Version(s)

ASP.NET Core 10.0 10.0 < 10.0.4

ASP.NET Core 8.0 8.0 < 8.0.25

ASP.NET Core 9.0 9.0 < 9.0.14

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.