ASP.NET Core Denial of Service Vulnerability
CVE-2026-69304

5.9MEDIUM

Key Information:

Vendor

Microsoft
Status
.net 10.0
.net 8.0
.net 9.0
Asp.net Core 10.0
Vendor
CVE Published:
8 September 2026

What is CVE-2026-69304?

Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Affected Version(s)

.NET 10.0 10.0.0 < 10.0.12

.NET 8.0 8.0.0 < 8.0.31

.NET 9.0 9.0.0 < 9.0.20

References

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

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.