{"id":"CVE-2021-35973","aliases":["EUVD-2021-22606","GHSA-8q8f-338r-vxhf"],"status":"published","title":"NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in ...","description":"NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the \u0026currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.03064,"percentile":0.87715,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-697"],"published":"2021-06-30T14:41:04Z","modified":"2026-06-17T03:58:07Z","products":[{"vendor":"netgear","product":"wac104_firmware"}],"references":[{"url":"https://gynvael.coldwind.pl/?lang=en\u0026id=736","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://kb.netgear.com/000063785/Security-Advisory-for-Authentication-Bypass-on-WAC104-PSV-2021-0075","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35973"},{"url":"https://github.com/advisories/GHSA-8q8f-338r-vxhf"}],"sources":{"cve":[{"id":"CVE-2021-35973","description":"NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the \u0026currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).","status":"published","published":"2021-06-30T14:41:04Z","modified":"2024-08-04T00:47:43.087Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N","level":"critical","assessor":"cna"}],"updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-22606","description":"NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the \u0026currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).","status":"published","published":"2021-06-30T14:41:04Z","modified":"2024-08-04T00:47:43Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N","level":"critical"}],"updated_at":"2026-11-03T03:24:29.877227Z"}],"ghsa":[{"id":"GHSA-8q8f-338r-vxhf","title":"NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in ...","description":"NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the \u0026currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).","status":"published","published":"2022-05-24T19:06:36Z","modified":"2023-01-27T05:03:01Z","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-287"],"updated_at":"2026-11-02T14:42:09.126228Z"}],"nvd":[{"id":"CVE-2021-35973","description":"NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the \u0026currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).","status":"published","published":"2021-06-30T15:15:10.607Z","modified":"2026-06-17T03:58:07.907Z","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":"secondary"},{"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":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:06:55.259633Z"}]}}