{"id":"CVE-2019-1365","aliases":["EUVD-2019-9923","GHSA-rchr-fxr5-m4xq"],"status":"published","title":"An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the...","description":"An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.","severity":{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.04352,"percentile":0.91296,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2019-10-10T13:28:42Z","modified":"2026-06-17T02:28:28Z","products":[{"vendor":"microsoft","product":"windows"},{"vendor":"microsoft","product":"windows 10 version 1903 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems"},{"vendor":"microsoft","product":"windows server"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_rt_8.1"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1365","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-1365"},{"url":"https://github.com/advisories/GHSA-rchr-fxr5-m4xq"}],"sources":{"cve":[{"id":"CVE-2019-1365","description":"An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.","status":"published","published":"2019-10-10T13:28:42Z","modified":"2024-08-04T18:13:30.502Z","updated_at":"2026-11-02T14:20:26.034547Z"}],"euvd":[{"id":"EUVD-2019-9923","description":"An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.","status":"published","published":"2019-10-10T13:28:42Z","modified":"2024-08-04T18:13:30Z","updated_at":"2026-11-03T03:06:58.233851Z"}],"ghsa":[{"id":"GHSA-rchr-fxr5-m4xq","title":"An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the...","description":"An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.","status":"published","published":"2022-05-24T16:58:30Z","modified":"2023-01-28T05:07:20Z","updated_at":"2026-11-02T14:44:31.117774Z"}],"nvd":[{"id":"CVE-2019-1365","description":"An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.","status":"published","published":"2019-10-10T14:15:18.347Z","modified":"2026-06-17T02:28:28.027Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:05:31.019577Z"}]}}