CVE-2020-1597

ASP.NET Core Denial of Service Vulnerability

Description

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.

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 8.49% Top 10%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory microsoft.com
Affected: Microsoft ASP.NET Core 2.1
Affected: Microsoft ASP.NET Core 3.1
Affected: Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
Affected: Microsoft Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
Affected: Microsoft Microsoft Visual Studio 2019 version 16.0
Affected: Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2020-1597?
CVE-2020-1597 has been scored as a high severity vulnerability.
How to fix CVE-2020-1597?
To fix CVE-2020-1597, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-1597 being actively exploited in the wild?
It is possible that CVE-2020-1597 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-1597?
CVE-2020-1597 affects Microsoft ASP.NET Core 2.1, Microsoft ASP.NET Core 3.1, Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3), Microsoft Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8), Microsoft Microsoft Visual Studio 2019 version 16.0, Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6).
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.