{"id":"CVE-2021-40405","aliases":["EUVD-2021-27582","GHSA-82gr-5fpf-q3w4"],"status":"published","title":"A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of...","description":"A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.","severity":{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01148,"percentile":0.67027,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284","CWE-404"],"published":"2022-04-14T19:56:15Z","modified":"2026-06-17T04:06:52Z","products":[{"vendor":"reolink","product":"rlc-410w"},{"vendor":"reolink","product":"rlc-410w_firmware"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1422","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40405"},{"url":"https://github.com/advisories/GHSA-82gr-5fpf-q3w4"}],"sources":{"cve":[{"id":"CVE-2021-40405","description":"A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.","status":"published","published":"2022-04-14T19:56:15.6Z","modified":"2025-04-15T19:07:32.739Z","cvss":[{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27582","description":"A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.","status":"published","published":"2022-04-14T19:56:15Z","modified":"2025-04-15T19:07:32Z","cvss":[{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:26.772603Z"}],"ghsa":[{"id":"GHSA-82gr-5fpf-q3w4","title":"A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of...","description":"A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.","status":"published","published":"2022-04-15T00:00:38Z","modified":"2023-01-27T05:01:34Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:41:55.795759Z"}],"nvd":[{"id":"CVE-2021-40405","description":"A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability.","status":"published","published":"2022-04-14T20:15:08.937Z","modified":"2026-06-17T04:06:52.54Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.0","score":7.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-284","CWE-404"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}