Denial of Service Vulnerability in ASP.NET Core by Microsoft
CVE-2026-109468

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Visual Studio 2022 Version 17.14
Microsoft Visual Studio 2026 Version 18.10
System.formats.cbor
Vendor
CVE Published:
15 October 2026

What is CVE-2026-109468?

A vulnerability in ASP.NET Core allows unauthorized attackers to exploit resource allocation without limits or throttling. This can lead to service disruption, as attackers may overload the system, effectively denying access to legitimate users. It is crucial for organizations using ASP.NET Core to apply the latest patches and implement security best practices to mitigate such risks.

Affected Version(s)

Microsoft Visual Studio 2022 version 17.14 17.14.0 < 17.14.42

Microsoft Visual Studio 2026 version 18.10 18.10.0 < 18.10.4

System.Formats.Cbor .NET 10.0 installed on Linux 10.0.0 < 10.0.13

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

.