{"id":"CVE-2020-1476","aliases":["EUVD-2020-12350","GHSA-8m4h-93rx-x9x3"],"status":"published","title":"ASP.NET and .NET Elevation of Privilege Vulnerability","description":"An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.\nTo exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server.\nThe update addresses the vulnerability by changing how ASP.NET and .NET handle requests.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01129,"percentile":0.66616,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2020-08-17T19:13:06Z","modified":"2026-06-17T03:01:30Z","products":[{"vendor":"microsoft","product":".net_framework"},{"vendor":"microsoft","product":"microsoft .net framework 2.0 service pack 2"},{"vendor":"microsoft","product":"microsoft .net framework 3.5"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.6.2/4.7/4.7.1/4.7.2"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.6/4.6.1/4.6.2"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.7.1/4.7.2"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.7.2"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.8"},{"vendor":"microsoft","product":"microsoft .net framework 3.5.1"},{"vendor":"microsoft","product":"microsoft .net framework 4.5.2"},{"vendor":"microsoft","product":"microsoft .net framework 4.6"},{"vendor":"microsoft","product":"microsoft .net framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2"},{"vendor":"microsoft","product":"microsoft .net framework 4.8"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1476","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1476"},{"url":"https://github.com/advisories/GHSA-8m4h-93rx-x9x3"}],"sources":{"cve":[{"id":"CVE-2020-1476","title":"ASP.NET and .NET Elevation of Privilege Vulnerability","description":"An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.\nTo exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server.\nThe update addresses the vulnerability by changing how ASP.NET and .NET handle requests.","status":"published","published":"2020-08-17T19:13:06Z","modified":"2024-08-04T06:39:10.505Z","updated_at":"2026-11-02T14:35:56.213477Z"}],"euvd":[{"id":"EUVD-2020-12350","description":"An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.\nTo exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server.\nThe update addresses the vulnerability by changing how ASP.NET and .NET handle requests.","status":"published","published":"2020-08-17T19:13:06Z","modified":"2024-08-04T06:39:10Z","updated_at":"2026-11-03T03:08:12.895997Z"}],"ghsa":[{"id":"GHSA-8m4h-93rx-x9x3","title":"An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on...","description":"An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files, aka 'ASP.NET and .NET Elevation of Privilege Vulnerability'.","status":"published","published":"2022-05-24T17:25:47Z","modified":"2024-01-12T05:08:30Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:55:24.003446Z"}],"nvd":[{"id":"CVE-2020-1476","description":"An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.\nTo exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server.\nThe update addresses the vulnerability by changing how ASP.NET and .NET handle requests.","status":"published","published":"2020-08-17T19:15:15.367Z","modified":"2026-06-17T03:01:30.653Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:06:13.05572Z"}]}}