{"id":"CVE-2021-27221","aliases":["EUVD-2021-13986","GHSA-xf77-xqpr-2gh9"],"status":"disputed","title":"** DISPUTED ** MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or...","description":"MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or overwrite arbitrary .rsc files via the /export command. NOTE: the vendor's position is that this is intended behavior because of how user policies work","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.04045,"percentile":0.90757,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2021-03-19T02:28:41Z","modified":"2026-06-17T03:44:29Z","products":[{"vendor":"mikrotik","product":"routeros"}],"references":[{"url":"https://onovy.medium.com/routeros-user-with-just-ftp-policy-can-write-to-filesystem-cve-2021-27221-e3e45d780dfe","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27221"},{"url":"https://github.com/advisories/GHSA-xf77-xqpr-2gh9"}],"sources":{"cve":[{"id":"CVE-2021-27221","description":"MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or overwrite arbitrary .rsc files via the /export command. NOTE: the vendor's position is that this is intended behavior because of how user policies work","status":"disputed","published":"2021-03-19T02:28:41Z","modified":"2024-08-03T20:40:47.487Z","updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-13986","description":"MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or overwrite arbitrary .rsc files via the /export command. NOTE: the vendor's position is that this is intended behavior because of how user policies work","status":"published","published":"2021-03-19T02:28:41Z","modified":"2024-08-03T20:40:47Z","updated_at":"2026-11-03T03:24:49.808499Z"}],"ghsa":[{"id":"GHSA-xf77-xqpr-2gh9","title":"** DISPUTED ** MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or...","description":"** DISPUTED ** MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or overwrite arbitrary .rsc files via the /export command. NOTE: the vendor's position is that this is intended behavior because of how user policies work.","status":"published","published":"2022-05-24T17:44:55Z","modified":"2023-01-27T05:02:48Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:42:06.500861Z"}],"nvd":[{"id":"CVE-2021-27221","description":"MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or overwrite arbitrary .rsc files via the /export command. NOTE: the vendor's position is that this is intended behavior because of how user policies work","status":"disputed","published":"2021-03-19T03:15:12.363Z","modified":"2026-06-17T03:44:29.69Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":8.5,"vector":"AV:N/AC:L/Au:S/C:N/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}