{"id":"CVE-2021-44554","aliases":["EUVD-2021-31381","GHSA-q6gc-hcqv-7cmx"],"status":"published","title":"Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS ...","description":"Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS (Windows) through the /changePassword URI. By accessing the vector, an attacker can determine if a username exists thanks to the message returned; it can be presented in different languages according to the configuration of VirtualUI. Common users are administrator, admin, guest and krgtbt.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01063,"percentile":0.6488,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-203"],"published":"2021-12-20T08:31:42Z","modified":"2026-06-17T04:12:33Z","products":[{"vendor":"cybelesoft","product":"thinfinity_virtualui"}],"references":[{"url":"https://github.com/cybelesoft/virtualui/issues/1","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44554"},{"url":"https://github.com/advisories/GHSA-q6gc-hcqv-7cmx"}],"sources":{"cve":[{"id":"CVE-2021-44554","description":"Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS (Windows) through the /changePassword URI. By accessing the vector, an attacker can determine if a username exists thanks to the message returned; it can be presented in different languages according to the configuration of VirtualUI. Common users are administrator, admin, guest and krgtbt.","status":"published","published":"2021-12-20T08:31:42Z","modified":"2024-08-04T04:25:16.743Z","updated_at":"2026-11-02T14:33:01.166399Z"}],"euvd":[{"id":"EUVD-2021-31381","description":"Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS (Windows) through the /changePassword URI. By accessing the vector, an attacker can determine if a username exists thanks to the message returned; it can be presented in different languages according to the configuration of VirtualUI. Common users are administrator, admin, guest and krgtbt.","status":"published","published":"2021-12-20T08:31:42Z","modified":"2024-08-04T04:25:16Z","updated_at":"2026-11-03T03:08:29.150764Z"}],"ghsa":[{"id":"GHSA-q6gc-hcqv-7cmx","title":"Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS ...","description":"Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS (Windows) through the /changePassword URI. By accessing the vector, an attacker can determine if a username exists thanks to the message returned; it can be presented in different languages according to the configuration of VirtualUI. Common users are administrator, admin, guest and krgtbt.","status":"published","published":"2021-12-21T00:00:47Z","modified":"2023-02-03T05:02:42Z","cwes":["CWE-203"],"updated_at":"2026-11-02T14:53:13.255536Z"}],"nvd":[{"id":"CVE-2021-44554","description":"Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS (Windows) through the /changePassword URI. By accessing the vector, an attacker can determine if a username exists thanks to the message returned; it can be presented in different languages according to the configuration of VirtualUI. Common users are administrator, admin, guest and krgtbt.","status":"published","published":"2021-12-20T09:15:06.727Z","modified":"2026-06-17T04:12:33.53Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:07:02.566991Z"}]}}