{"id":"CVE-2021-40409","aliases":["EUVD-2021-27586","GHSA-q4pw-hphq-p8qf"],"status":"published","title":"An OS command injection vulnerability exists in the device network settings functionality of...","description":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns-\u003epassword variable, that has the value of the password parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection.","severity":{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.03657,"percentile":0.89699,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2022-01-28T19:10:14Z","modified":"2026-06-17T04:06:53Z","products":[{"vendor":"reolink","product":"rlc-410w_firmware"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40409"},{"url":"https://github.com/advisories/GHSA-q4pw-hphq-p8qf"}],"sources":{"cve":[{"id":"CVE-2021-40409","description":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns-\u003epassword variable, that has the value of the password parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection.","status":"published","published":"2022-01-28T19:10:14Z","modified":"2025-04-15T19:20:28.047Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27586","description":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns-\u003epassword variable, that has the value of the password parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection.","status":"published","published":"2022-01-28T19:10:14Z","modified":"2025-04-15T19:20:28Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:52:26.346189Z"}],"ghsa":[{"id":"GHSA-q4pw-hphq-p8qf","title":"An OS command injection vulnerability exists in the device network settings functionality of...","description":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns-\u003epassword variable, that has the value of the password parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection.","status":"published","published":"2022-01-29T00:00:43Z","modified":"2023-02-03T05:05:33Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:53:45.828819Z"}],"nvd":[{"id":"CVE-2021-40409","description":"An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns-\u003epassword variable, that has the value of the password parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection.","status":"published","published":"2022-01-28T20:15:11.697Z","modified":"2026-06-17T04:06:53.003Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:07:04.178977Z"}]}}