CVE-2026-70159

ASP.NET Core Denial of Service Vulnerability

Published Oct 13, 2026 CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
Description
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-334f-vvp4-7g6p Microsoft Security Advisory CVE-2026-70159 - ASP.NET Core Denial of Service Vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Allocation of resources without limits or throttling 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 microsoft.aspnetcore.signalr.common
Microsoft microsoft.aspnetcore.signalr.core
Microsoft microsoft Visual Studio 2026 Version 18.10
Microsoft visual Studio 2022
Weaknesses CWE-770
CPEs cpe:2.3:a:microsoft:microsoft.aspnetcore.signalr.common:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.signalr.core:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.10:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft microsoft.aspnetcore.signalr.common
Microsoft microsoft.aspnetcore.signalr.core
Microsoft microsoft Visual Studio 2026 Version 18.10
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 10, 2026, 8:39 PM
Reserved
Aug 3, 2026, 11:36 PM
Status
Undergoing Analysis
Published
Oct 13, 2026, 7:19 PM
Modified
Oct 22, 2026, 10:18 PM
Severity
Important
Public date
Oct 13, 2026, 5:00 PM