{"id":"CVE-2021-42110","aliases":["EUVD-2021-29096","GHSA-jx3f-hj4m-h7p9"],"status":"published","title":"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard...","description":"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.003,"percentile":0.2282,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-12-08T15:42:31Z","modified":"2026-06-17T04:09:20Z","products":[{"vendor":"allegro","product":"allegro"}],"references":[{"url":"https://excellium-services.com/cert-xlm-advisory/CVE-2021-42110","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"http://www.popsy.com/Documents/Setups/Setup.Allegro.3.3.4154.2.exe","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-42110"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42110"},{"url":"https://github.com/advisories/GHSA-jx3f-hj4m-h7p9"}],"sources":{"cve":[{"id":"CVE-2021-42110","description":"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.","status":"published","published":"2021-12-08T15:42:31Z","modified":"2025-05-30T16:01:45.661Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29096","description":"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.","status":"published","published":"2021-12-08T15:42:31Z","modified":"2025-05-30T16:01:45Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N","level":"high"}],"updated_at":"2026-11-02T20:32:34.145186Z"}],"ghsa":[{"id":"GHSA-jx3f-hj4m-h7p9","title":"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard...","description":"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.","status":"published","published":"2021-12-09T00:00:39Z","modified":"2025-05-30T18:30:41Z","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"}],"updated_at":"2026-11-02T15:02:30.830782Z"}],"nvd":[{"id":"CVE-2021-42110","description":"An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1. A standard user can escalate privileges to SYSTEM if the FTP module is installed, because of DLL hijacking.","status":"published","published":"2021-12-08T16:15:07.147Z","modified":"2026-06-17T04:09:20.053Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"high","assessor":"secondary"},{"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":6.2,"vector":"AV:L/AC:H/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}