{"id":"CVE-2021-45739","aliases":["EUVD-2021-32457","GHSA-2vw5-8fhm-cvqc"],"status":"published","title":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the...","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01175,"percentile":0.67955,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2022-02-04T01:33:53Z","modified":"2026-06-17T04:14:02Z","products":[{"vendor":"totolink","product":"a720r_firmware"}],"references":[{"url":"https://github.com/pjqwudi/my_vuln/blob/main/totolink/vuln_5/5.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45739"},{"url":"https://github.com/advisories/GHSA-2vw5-8fhm-cvqc"}],"sources":{"cve":[{"id":"CVE-2021-45739","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter.","status":"published","published":"2022-02-04T01:33:53Z","modified":"2024-08-04T04:47:01.996Z","updated_at":"2026-11-02T14:33:02.580561Z"}],"euvd":[{"id":"EUVD-2021-32457","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter.","status":"published","published":"2022-02-04T01:33:53Z","modified":"2024-08-04T04:47:01Z","updated_at":"2026-11-03T03:08:26.364792Z"}],"ghsa":[{"id":"GHSA-2vw5-8fhm-cvqc","title":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the...","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter.","status":"published","published":"2022-02-05T00:00:38Z","modified":"2023-08-08T15:31:38Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:54:44.111289Z"}],"nvd":[{"id":"CVE-2021-45739","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the Form_Login function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the flag parameter.","status":"published","published":"2022-02-04T02:15:08.34Z","modified":"2026-06-17T04:14:02.183Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:07:04.178977Z"}]}}