{"id":"CVE-2021-21743","aliases":["EUVD-2021-8915","GHSA-jm9f-ff4v-792m"],"status":"published","title":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the...","description":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.0085,"percentile":0.586,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74"],"published":"2021-10-20T15:19:32Z","modified":"2026-06-17T03:36:04Z","products":[{"vendor":"zte","product":"mf971r_firmware"}],"references":[{"url":"https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1019764","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21743"},{"url":"https://github.com/advisories/GHSA-jm9f-ff4v-792m"}],"sources":{"cve":[{"id":"CVE-2021-21743","description":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.","status":"published","published":"2021-10-20T15:19:32Z","modified":"2024-08-03T18:23:29.268Z","updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-8915","description":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.","status":"published","published":"2021-10-20T15:19:32Z","modified":"2024-08-03T18:23:29Z","updated_at":"2026-11-03T03:25:05.131984Z"}],"ghsa":[{"id":"GHSA-jm9f-ff4v-792m","title":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the...","description":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.","status":"published","published":"2022-05-24T19:18:04Z","modified":"2023-01-30T05:02:55Z","cwes":["CWE-74"],"updated_at":"2026-11-02T14:46:44.129156Z"}],"nvd":[{"id":"CVE-2021-21743","description":"ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.","status":"published","published":"2021-10-20T16:15:08.103Z","modified":"2026-06-17T03:36:04.573Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:07:00.137719Z"}]}}