{"id":"CVE-2020-3979","aliases":["EUVD-2020-25244","GHSA-6495-758p-crj2"],"status":"published","title":"InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a...","description":"InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00376,"percentile":0.31787,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-426","CWE-427"],"published":"2020-09-18T17:37:00Z","modified":"2026-06-17T03:19:22Z","products":[{"vendor":"installbuilder","product":"installbuilder"}],"references":[{"url":"https://blog.installbuilder.com/2020/08/updates-and-bug-fixes-with-version-2070.html","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-3979"},{"url":"https://github.com/advisories/GHSA-6495-758p-crj2"}],"sources":{"cve":[{"id":"CVE-2020-3979","description":"InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.","status":"published","published":"2020-09-18T17:37:00Z","modified":"2024-08-04T07:52:20.546Z","updated_at":"2026-11-02T14:35:52.268457Z"}],"euvd":[{"id":"EUVD-2020-25244","description":"InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.","status":"published","published":"2020-09-18T17:37:00Z","modified":"2024-08-04T07:52:20Z","updated_at":"2026-11-03T03:08:07.872525Z"}],"ghsa":[{"id":"GHSA-6495-758p-crj2","title":"InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a...","description":"InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.","status":"published","published":"2022-05-24T17:29:02Z","modified":"2023-01-29T05:04:07Z","cwes":["CWE-426"],"updated_at":"2026-11-02T14:45:28.498835Z"}],"nvd":[{"id":"CVE-2020-3979","description":"InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.","status":"published","published":"2020-09-18T18:15:17.44Z","modified":"2026-06-17T03:19:22.343Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.4,"vector":"AV:L/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:06:15.83396Z"}]}}