{"id":"CVE-2021-23241","aliases":["EUVD-2021-10340","GHSA-7crf-438p-2fw4"],"status":"published","title":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a...","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.","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":"2026-11-11","score":0.12825,"percentile":0.96342,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2021-01-07T20:19:32Z","modified":"2026-06-17T03:38:28Z","exploits":[{"source":"nuclei","id":"CVE-2021-23241","title":"MERCUSYS Mercury X18G 1.0.5 Router - Local File Inclusion","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-23241.yaml"}],"products":[{"vendor":"mercusys","product":"mercury_x18g_firmware"}],"references":[{"url":"https://www.mercusys.com/en/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://github.com/BATTZION/MY_REQUEST/blob/master/Mercury%20Router%20Web%20Server%20Directory%20Traversal.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.mercurycom.com.cn/product-521-1.html","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23241"},{"url":"https://github.com/advisories/GHSA-7crf-438p-2fw4"}],"sources":{"cve":[{"id":"CVE-2021-23241","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.","status":"published","published":"2021-01-07T20:19:32Z","modified":"2024-08-03T19:05:55.627Z","updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-10340","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.","status":"published","published":"2021-01-07T20:19:32Z","modified":"2024-08-03T19:05:55Z","updated_at":"2026-11-03T03:25:00.126172Z"}],"ghsa":[{"id":"GHSA-7crf-438p-2fw4","title":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a...","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.","status":"published","published":"2022-05-24T17:38:15Z","modified":"2023-01-29T05:05:17Z","cwes":["CWE-22"],"updated_at":"2026-11-02T14:45:45.423268Z"}],"nvd":[{"id":"CVE-2021-23241","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.","status":"published","published":"2021-01-07T21:15:14.04Z","modified":"2026-06-17T03:38:28.047Z","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-22"],"updated_at":"2026-11-02T14:06:49.284888Z"}]}}