{"id":"CVE-2021-27209","aliases":["EUVD-2021-13974","GHSA-4x53-4vwf-pv6f"],"status":"published","title":"In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a...","description":"In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00241,"percentile":0.15352,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-319"],"published":"2021-02-13T00:05:15Z","modified":"2026-06-17T03:44:28Z","products":[{"vendor":"tp-link","product":"archer_c5v_firmware"}],"references":[{"url":"https://gokay.org/tp-link-archer-c5v-base64-cookie/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27209"},{"url":"https://github.com/advisories/GHSA-4x53-4vwf-pv6f"}],"sources":{"cve":[{"id":"CVE-2021-27209","description":"In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.","status":"published","published":"2021-02-13T00:05:15Z","modified":"2024-08-03T20:40:47.478Z","updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-13974","description":"In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.","status":"published","published":"2021-02-13T00:05:15Z","modified":"2024-08-03T20:40:47Z","updated_at":"2026-11-03T03:24:49.808499Z"}],"ghsa":[{"id":"GHSA-4x53-4vwf-pv6f","title":"In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a...","description":"In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.","status":"published","published":"2022-05-24T17:42:08Z","modified":"2023-01-29T05:05:42Z","cwes":["CWE-319"],"updated_at":"2026-11-02T14:45:51.307262Z"}],"nvd":[{"id":"CVE-2021-27209","description":"In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.","status":"published","published":"2021-02-13T01:15:12.733Z","modified":"2026-06-17T03:44:28.123Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":3.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-319"],"updated_at":"2026-11-02T14:06:50.031227Z"}]}}