{"id":"CVE-2021-23242","aliases":["EUVD-2021-10341","GHSA-2mrx-4g5g-2vw5"],"status":"published","title":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as...","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json 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":"2026-11-12","score":0.01829,"percentile":0.79162,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2021-01-07T20:19:22Z","modified":"2026-06-17T03:38:28Z","products":[{"vendor":"mercusys","product":"mercury_x18g_firmware"}],"references":[{"url":"https://www.mercusys.com/en/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.mercurycom.com.cn/product-521-1.html","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://github.com/BATTZION/MY_REQUEST/blob/master/Mercury%20Router%20Upnp%20Server%20Directory%20Traversal.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23242"},{"url":"https://github.com/advisories/GHSA-2mrx-4g5g-2vw5"}],"sources":{"cve":[{"id":"CVE-2021-23242","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json URI.","status":"published","published":"2021-01-07T20:19:22Z","modified":"2024-08-03T19:05:54.553Z","updated_at":"2026-11-02T14:33:00.819444Z"}],"euvd":[{"id":"EUVD-2021-10341","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json URI.","status":"published","published":"2021-01-07T20:19:22Z","modified":"2024-08-03T19:05:54Z","updated_at":"2026-11-03T03:25:00.126172Z"}],"ghsa":[{"id":"GHSA-2mrx-4g5g-2vw5","title":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as...","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json URI.","status":"published","published":"2022-05-24T17:38:15Z","modified":"2023-01-29T05:05:16Z","cwes":["CWE-22"],"updated_at":"2026-11-02T14:45:45.423268Z"}],"nvd":[{"id":"CVE-2021-23242","description":"MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ to the UPnP server, as demonstrated by the /../../conf/template/uhttpd.json URI.","status":"published","published":"2021-01-07T21:15:14.37Z","modified":"2026-06-17T03:38:28.167Z","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"}]}}