{"cve":"CVE-2020-1161","nvd":{"published":"2020-05-21T23:15:17.603","modified":"2026-08-19T17:17:28.160","status":"Modified","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.\nA remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application.\nThe update addresses the vulnerability by correcting how the ASP.NET Core web application handles web requests.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1161","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1161"],"products":["microsoft:asp.net_core","microsoft:visual_studio_2017","microsoft:visual_studio_2019"],"source":"nvd","synced_at":"2026-10-19T21:05:42.039641217+00:00"},"epss":{"cve":"CVE-2020-1161","score":0.05313,"percentile":0.92599,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}