๐Ÿ” CVE Alert

CVE-2026-109478

HIGH 7.5

ASP.NET Core Denial of Service Vulnerability

CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th

Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Vendor microsoft
Product .net 8.0 installed on linux
Ecosystems
Industries
TechnologyEnterprise
Published Nov 10, 2026
Last Updated Nov 10, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

Microsoft / .NET 8.0 installed on Linux
8.0.0 < 8.0.34
Microsoft / .NET 8.0 installed on Mac OS
8.0.0 < 8.0.34
Microsoft / .NET 8.0 installed on Windows
8.0.0 < 8.0.34
Microsoft / .NET 9.0 installed on Linux
9.0.0 < 9.0.0-preview.4.24266.19
Microsoft / .NET 9.0 installed on Mac OS
9.0.0 < 9.0.0-preview.4.24266.19
Microsoft / .NET 9.0 installed on Windows
9.0.0 < 9.0.0-preview.4.24266.19
Microsoft / Microsoft Visual Studio 2022 version 17.14
17.14.0 < 17.14.45
Microsoft / Microsoft Visual Studio 2026 version 18.11
18.11.0 < 18.11.4
Microsoft / Microsoft Visual Studio 2026 version 18.12
18.12.0 < 18.12.0

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
msrc.microsoft.com: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109478