{"id":"CVE-2021-45740","aliases":["EUVD-2021-32458","GHSA-6c2j-x443-7jc3"],"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 setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter.","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":"2026-11-11","score":0.01363,"percentile":0.72156,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2022-02-04T01:33:52Z","modified":"2026-06-17T04:14:02Z","products":[{"vendor":"totolink","product":"a720r_firmware"}],"references":[{"url":"https://github.com/pjqwudi/my_vuln/blob/main/totolink/vuln_4/4.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45740"},{"url":"https://github.com/advisories/GHSA-6c2j-x443-7jc3"}],"sources":{"cve":[{"id":"CVE-2021-45740","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter.","status":"published","published":"2022-02-04T01:33:52Z","modified":"2024-08-04T04:47:02.051Z","updated_at":"2026-11-02T14:33:02.580561Z"}],"euvd":[{"id":"EUVD-2021-32458","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter.","status":"published","published":"2022-02-04T01:33:52Z","modified":"2024-08-04T04:47:02Z","updated_at":"2026-11-03T03:08:25.77408Z"}],"ghsa":[{"id":"GHSA-6c2j-x443-7jc3","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 setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter.","status":"published","published":"2022-02-05T00:00:38Z","modified":"2023-08-08T15:31:37Z","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-787"],"updated_at":"2026-11-02T14:54:44.111289Z"}],"nvd":[{"id":"CVE-2021-45740","description":"TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter.","status":"published","published":"2022-02-04T02:15:08.387Z","modified":"2026-06-17T04:14:02.3Z","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"}],"updated_at":"2026-11-02T14:07:04.178977Z"}]}}