{"cve":"CVE-2021-43711","nvd":{"published":"2022-01-04T14:15:08.127","modified":"2026-06-17T04:11:18.557","status":"Modified","description":"The downloadFlile.cgi binary file in TOTOLINK EX200 V4.0.3c.7646_B20201211 has a command injection vulnerability when receiving GET parameters. The parameter name can be constructed for unauthenticated command execution.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-77"],"references":["https://github.com/doudoudedi/ToTolink_EX200_Cmmand_Execute/blob/main/ToTolink%20EX200%20Comand%20Injection2.md","https://github.com/doudoudedi/ToTolink_EX200_Cmmand_Execute/blob/main/ToTolink%20EX200%20Comand%20Injection2.md"],"products":["totolink:ex200_firmware"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-43711","score":0.37835,"percentile":0.98545,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}