CVE-2020-1597ASP.NET Core Denial of Service Vulnerability
- 7.5HighCVSS base score
- 6.6%Exploitation in 30 daysEPSS · top 6.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By microsoft
- 10 months later
· 10 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 6.6% · top 6.1% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 2.0 – < publication
- affected 3.0 – < publication
Microsoft · Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
- affected 16.0 – < publication
Microsoft · Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
- affected 15.9.0 – < publication
Microsoft · Microsoft Visual Studio 2019 version 16.0
- affected 16.0 – < publication
Microsoft · Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)
- affected 16.0.0 – < publication
Affected packages
Affected packages12
From reviewed advisories of the GitHub Advisory Database.
- NuGetMicrosoft.AspNetCore.AllGHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.AppGHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.linux-armGHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.linux-arm64GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-x64GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.linux-x64GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.osx-x64GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.win-armGHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.win-arm64GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.win-x64GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- NuGetMicrosoft.AspNetCore.App.Runtime.win-x86GHSA-f8qx-mjcq-wfgx (opens in a new tab)
References
References3
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1597 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2020-cad5d17c6d (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2020-9ddf1aa50b (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-3728 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-f8qx-mjcq-wfgx (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-1597)Record last updated .