{"id":"CVE-2021-27169","aliases":["EUVD-2021-13936","GHSA-3267-pg8g-jq86"],"status":"published","title":"An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon...","description":"An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon password for the gepon account.","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":0.2007,"percentile":0.97482,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-798"],"published":"2021-02-10T18:35:59Z","modified":"2026-06-17T03:44:23Z","products":[{"vendor":"fiberhome","product":"an5506-04-fa_firmware"}],"references":[{"url":"https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-linux-hardcoded-credentials","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27169"},{"url":"https://github.com/advisories/GHSA-3267-pg8g-jq86"}],"sources":{"cve":[{"id":"CVE-2021-27169","description":"An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon password for the gepon account.","status":"published","published":"2021-02-10T18:35:59Z","modified":"2024-08-03T20:40:47.615Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-13936","description":"An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon password for the gepon account.","status":"published","published":"2021-02-10T18:35:59Z","modified":"2024-08-03T20:40:47Z","updated_at":"2026-11-03T03:24:49.808499Z"}],"ghsa":[{"id":"GHSA-3267-pg8g-jq86","title":"An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon...","description":"An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon password for the gepon account.","status":"published","published":"2022-05-24T17:41:51Z","modified":"2023-01-29T05:06:28Z","cwes":["CWE-798"],"updated_at":"2026-11-02T14:46:01.927509Z"}],"nvd":[{"id":"CVE-2021-27169","description":"An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon password for the gepon account.","status":"published","published":"2021-02-10T19:15:14.887Z","modified":"2026-06-17T03:44:23.637Z","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":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:06:50.031227Z"}]}}