{"id":"CVE-2021-35327","aliases":["EUVD-2021-21970","GHSA-w5cw-c968-jv2x"],"status":"published","title":"A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start...","description":"A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start the Telnet service, then login with the default credentials via a crafted POST request.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01384,"percentile":0.72409,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2021-08-05T20:39:17Z","modified":"2026-06-17T03:57:26Z","products":[{"vendor":"totolink","product":"a720r_firmware"}],"references":[{"url":"https://github.com/hurricane618/my_cves/blob/master/router/totolink/A720R_default_telnet_info.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35327"},{"url":"https://github.com/advisories/GHSA-w5cw-c968-jv2x"}],"sources":{"cve":[{"id":"CVE-2021-35327","description":"A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start the Telnet service, then login with the default credentials via a crafted POST request.","status":"published","published":"2021-08-05T20:39:17Z","modified":"2024-08-04T00:33:51.414Z","updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-21970","description":"A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start the Telnet service, then login with the default credentials via a crafted POST request.","status":"published","published":"2021-08-05T20:39:17Z","modified":"2024-08-04T00:33:51Z","updated_at":"2026-11-03T03:24:30.441845Z"}],"ghsa":[{"id":"GHSA-w5cw-c968-jv2x","title":"A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start...","description":"A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start the Telnet service, then login with the default credentials via a crafted POST request.","status":"published","published":"2022-05-24T19:10:04Z","modified":"2023-01-30T05:01:13Z","cwes":["CWE-862"],"updated_at":"2026-11-02T14:46:22.009402Z"}],"nvd":[{"id":"CVE-2021-35327","description":"A vulnerability in TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to start the Telnet service, then login with the default credentials via a crafted POST request.","status":"published","published":"2021-08-05T21:15:12.6Z","modified":"2026-06-17T03:57:26.64Z","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":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:06:56.562207Z"}]}}