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Vulnerability Intelligence Report
ASP.NET Core Denial of Service Vulnerability

CVE-2020-1161

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application. The update addresses the vulnerability by correcting how the ASP.NET Core web application handles web requests.

No Active Exploit Signals
CVSS Base Score
7.5
—
EPSS Probability:5.70%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
—

Affected Products & Versions

Vendor Product Affected Versions
Microsoft ASP.NET Core 3.1 3.0 < publication (affected)
Microsoft Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) 15.9.0 < publication (affected)
Microsoft Microsoft Visual Studio 2019 version 16.0 16.0 < publication (affected)
Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) 16.0 < publication (affected)
Microsoft Microsoft Visual Studio 2019 version 16.5 16.0 < publication (affected)

References & Technical Advisories

No reference links found.

Threat Intelligence Signals

EPSS Score
5.701%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityMicrosoft Corporation · Vendor · USA
Reserved2019-11-04T00:00:00
Published2020-05-21T22:53:28
Patch Date2020-05-12
Last Updated2026-08-19T16:34:12

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