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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Microsoft .NET 8.0 installed on Linux affected
Version Status Constraints
8.0.0 affected < 8.0.34
Microsoft .NET 8.0 installed on Mac OS affected
Version Status Constraints
8.0.0 affected < 8.0.34
Microsoft .NET 8.0 installed on Windows affected
Version Status Constraints
8.0.0 affected < 8.0.34
Microsoft Microsoft Visual Studio 2022 version 17.14 affected
Version Status Constraints
17.14.0 affected < 17.14.45
Microsoft Microsoft Visual Studio 2026 version 18.11 affected
Version Status Constraints
18.11.0 affected < 18.11.4
Microsoft Microsoft Visual Studio 2026 version 18.12 affected
Version Status Constraints
18.12.0 affected < 18.12.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Microsoft Subscribe
.net 8.0 Installed On Linux Subscribe
.net 8.0 Installed On Mac Os Subscribe
.net 8.0 Installed On Windows Subscribe
Microsoft Visual Studio 2026 Version 18.11 Subscribe
Microsoft Visual Studio 2026 Version 18.12 Subscribe
Visual Studio 2022 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109478 cve-icon
History

Tue, 10 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Description Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Title ASP.NET Core Denial of Service Vulnerability
First Time appeared Microsoft
Microsoft .net 8.0 Installed On Linux
Microsoft .net 8.0 Installed On Mac Os
Microsoft .net 8.0 Installed On Windows
Microsoft microsoft Visual Studio 2026 Version 18.11
Microsoft microsoft Visual Studio 2026 Version 18.12
Microsoft visual Studio 2022
Weaknesses CWE-407
CPEs cpe:2.3:a:microsoft:.net_8.0_installed_on_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_8.0_installed_on_mac_os:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_8.0_installed_on_windows:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.11:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.12:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net 8.0 Installed On Linux
Microsoft .net 8.0 Installed On Mac Os
Microsoft .net 8.0 Installed On Windows
Microsoft microsoft Visual Studio 2026 Version 18.11
Microsoft microsoft Visual Studio 2026 Version 18.12
Microsoft visual Studio 2022
References
Metrics cvssV3_1

{'score': 7.5, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-11-10T18:15:23.710Z

Reserved: 2026-10-12T17:01:11.371Z

Link: CVE-2026-109478

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses