Microsoft ASP.NET Core

Oct 2025: ASP.NET Security Feature Bypass Vulnerability
CVE-2025-55315 9.9 - Critical - October 14, 2025

Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.

HTTP Request Smuggling

Apr 2025: ASP.NET Core and Visual Studio Denial of Service Vulnerability
CVE-2025-26682 7.5 - High - April 08, 2025

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Allocation of Resources Without Limits or Throttling

Mar 2025: ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
CVE-2025-24070 7 - High - March 11, 2025

Weak authentication in ASP.NET Core & Visual Studio allows an unauthorized attacker to elevate privileges over a network.

1390

\.NET DoS Vulnerability (CVE-2024-21386)
CVE-2024-21386 7.5 - High - February 13, 2024

.NET Denial of Service Vulnerability

MS .NET Framework DOS Vulnerability CVE-2024-21404
CVE-2024-21404 7.5 - High - February 13, 2024

.NET Denial of Service Vulnerability

Nov 2023: ASP.NET Core Security Feature Bypass Vulnerability
CVE-2023-36558 6.2 - Medium - November 14, 2023

ASP.NET Core Security Feature Bypass Vulnerability

Nov 2023: ASP.NET Core Denial of Service Vulnerability
CVE-2023-36038 8.2 - High - November 14, 2023

ASP.NET Core Denial of Service Vulnerability

Resource Exhaustion

HTTP/2 DoS via Stream Reset in nginx
CVE-2023-44487 7.5 - High - October 10, 2023

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

Resource Exhaustion

Microsoft ASP.NET Core SignalR & VS Info Disclosure (CVE-2023-35391)
CVE-2023-35391 7.5 - High - August 08, 2023

ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability

Aug 2023: .NET and Visual Studio Denial of Service Vulnerability
CVE-2023-38180 7.5 - High - August 08, 2023

.NET and Visual Studio Denial of Service Vulnerability

Resource Exhaustion

ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
CVE-2021-43877 8.8 - High - December 15, 2021

ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability

ASP.NET Core and Visual Studio Information Disclosure Vulnerability
CVE-2021-34532 5.5 - Medium - August 12, 2021

ASP.NET Core and Visual Studio Information Disclosure Vulnerability

Jan 2021: ASP.NET Core and Visual Studio Denial of Service Vulnerability
CVE-2021-1723 7.5 - High - January 12, 2021

ASP.NET Core and Visual Studio Denial of Service Vulnerability

Sep 2020: Microsoft ASP.NET Core Security Feature Bypass Vulnerability
CVE-2020-1045 7.5 - High - September 11, 2020

<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p> <p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p> <p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests
CVE-2020-1597 7.5 - High - August 17, 2020

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.

May 2020:
CVE-2020-1161 - May 21, 2020

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka 'ASP.NET Core Denial of Service Vulnerability'.

A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle objects in memory.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user
CVE-2020-0603 8.8 - High - January 14, 2020

A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle objects in memory.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka 'ASP.NET Core Remote Code Execution Vulnerability'.

Buffer Overflow

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests
CVE-2020-0602 7.5 - High - January 14, 2020

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka 'ASP.NET Core Denial of Service Vulnerability'.

Resource Exhaustion

Sep 2019:
CVE-2019-1302 - September 11, 2019

An elevation of privilege vulnerability exists when a ASP.NET Core web application, created using vulnerable project templates, fails to properly sanitize web requests, aka 'ASP.NET Core Elevation Of Privilege Vulnerability'.

Jul 2019:
CVE-2019-1075 - July 15, 2019

A spoofing vulnerability exists in ASP.NET Core that could lead to an open redirect, aka 'ASP.NET Core Spoofing Vulnerability'.

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests
CVE-2019-0982 7.5 - High - May 16, 2019

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka 'ASP.NET Core Denial of Service Vulnerability'.

Data Processing Errors

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests
CVE-2019-0815 7.5 - High - April 09, 2019

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka 'ASP.NET Core Denial of Service Vulnerability'.

Data Processing Errors

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests
CVE-2019-0564 7.5 - High - January 08, 2019

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0548.

Data Processing Errors

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests
CVE-2019-0548 7.5 - High - January 08, 2019

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.2, ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0564.

Data Processing Errors

Nov 2018:
CVE-2018-8416 - November 14, 2018

A tampering vulnerability exists when .NET Core improperly handles specially crafted files, aka ".NET Core Tampering Vulnerability." This affects .NET Core 2.1.

Oct 2018:
CVE-2018-8292 - October 10, 2018

An information disclosure vulnerability exists in .NET Core when authentication information is inadvertently exposed in a redirect, aka ".NET Core Information Disclosure Vulnerability." This affects .NET Core 2.1, .NET Core 1.0, .NET Core 1.1, PowerShell Core 6.0.

Sep 2018:
CVE-2018-8409 - September 13, 2018

A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.

Jul 2018:
CVE-2018-8356 - July 11, 2018

A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka ".NET Framework Security Feature Bypass Vulnerability." This affects .NET Framework 4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, ASP.NET Core 1.1, Microsoft .NET Framework 4.5.2, ASP.NET Core 2.0, ASP.NET Core 1.0, .NET Core 1.1, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 1.0, .NET Core 2.0, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.

Jul 2018:
CVE-2018-8171 - July 11, 2018

A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated, aka "ASP.NET Security Feature Bypass Vulnerability." This affects ASP.NET, ASP.NET Core 1.1, ASP.NET Core 1.0, ASP.NET Core 2.0, ASP.NET MVC 5.2.

.NET Core 1.0, .NET Core 1.1, NET Core 2.0 and PowerShell Core 6.0.0
CVE-2018-0875 - March 14, 2018

.NET Core 1.0, .NET Core 1.1, NET Core 2.0 and PowerShell Core 6.0.0 allow a denial of Service vulnerability due to how specially crafted requests are handled, aka ".NET Core Denial of Service Vulnerability".

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privile
CVE-2018-0808 - March 14, 2018

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privilege vulnerability due to how ASP.NET web applications handle web requests, aka "ASP.NET Core Elevation Of Privilege Vulnerability". This CVE is unique from CVE-2018-0784.

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privile
CVE-2018-0787 - March 14, 2018

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privilege vulnerability due to how web applications that are created from templates validate web requests, aka "ASP.NET Core Elevation Of Privilege Vulnerability".

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privile
CVE-2018-0784 - January 10, 2018

ASP.NET Core 1.0. 1.1, and 2.0 allow an elevation of privilege vulnerability due to the ASP.NET Core project templates, aka "ASP.NET Core Elevation Of Privilege Vulnerability". This CVE is unique from CVE-2018-0808.

ASP.NET Core 1.0. 1.1, and 2.0 allow a cross site request fo
CVE-2018-0785 - January 10, 2018

ASP.NET Core 1.0. 1.1, and 2.0 allow a cross site request forgery vulnerability due to the ASP.NET Core project templates, aka "ASP.NET Core Cross Site Request Forgery Vulnerability".