{"id":"CVE-2021-26620","aliases":["EUVD-2021-13414","GHSA-cc72-grgq-wvmx"],"status":"published","title":"IPTIME NAS2dual improper authentication vulnerability","description":"An improper authentication vulnerability leading to information leakage was discovered in iptime NAS2dual. Remote attackers are able to steal important information in the server by exploiting vulnerabilities such as insufficient authentication when accessing the shared folder and changing user’s passwords.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0135,"percentile":0.71909,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2022-03-25T18:02:37Z","modified":"2026-06-17T03:43:34Z","products":[{"vendor":"efm networks co., ltd","product":"iptime nas product (nas1, 2, 3, 4, 1dual, 2dual 4dual)"},{"vendor":"iptime","product":"nas-i_firmware"},{"vendor":"iptime","product":"nas-ii_firmware"},{"vendor":"iptime","product":"nas-iie_firmware"},{"vendor":"iptime","product":"nas101_firmware"},{"vendor":"iptime","product":"nas1dual_firmware"},{"vendor":"iptime","product":"nas2dual_firmware"},{"vendor":"iptime","product":"nas3_firmware"},{"vendor":"iptime","product":"nas4_firmware"},{"vendor":"iptime","product":"nas4dual_firmware"}],"references":[{"url":"https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66578","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26620"},{"url":"https://github.com/advisories/GHSA-cc72-grgq-wvmx"}],"sources":{"cve":[{"id":"CVE-2021-26620","title":"IPTIME NAS2dual improper authentication vulnerability","description":"An improper authentication vulnerability leading to information leakage was discovered in iptime NAS2dual. Remote attackers are able to steal important information in the server by exploiting vulnerabilities such as insufficient authentication when accessing the shared folder and changing user’s passwords.","status":"published","published":"2022-03-25T18:02:37Z","modified":"2024-08-03T20:26:25.555Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-13414","description":"An improper authentication vulnerability leading to information leakage was discovered in iptime NAS2dual. Remote attackers are able to steal important information in the server by exploiting vulnerabilities such as insufficient authentication when accessing the shared folder and changing user’s passwords.","status":"published","published":"2022-03-25T18:02:37Z","modified":"2024-08-03T20:26:25Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-03T03:24:51.40664Z"}],"ghsa":[{"id":"GHSA-cc72-grgq-wvmx","title":"An improper authentication vulnerability leading to information leakage was discovered in iptime...","description":"An improper authentication vulnerability leading to information leakage was discovered in iptime NAS2dual. Remote attackers are able to steal important information in the server by exploiting vulnerabilities such as insufficient authentication when accessing the shared folder and changing user’s passwords.","status":"published","published":"2022-03-26T00:00:31Z","modified":"2023-01-27T05:01:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:41:48.523978Z"}],"nvd":[{"id":"CVE-2021-26620","description":"An improper authentication vulnerability leading to information leakage was discovered in iptime NAS2dual. Remote attackers are able to steal important information in the server by exploiting vulnerabilities such as insufficient authentication when accessing the shared folder and changing user’s passwords.","status":"published","published":"2022-03-25T19:15:08.687Z","modified":"2026-06-17T03:43:34.66Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","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-287"],"updated_at":"2026-11-02T14:07:05.581807Z"}]}}