{"id":"CVE-2020-25754","aliases":["EUVD-2020-18405","GHSA-cq4j-2685-h9rw"],"status":"published","title":"An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for...","description":"An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0135,"percentile":0.71699,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-916"],"published":"2021-06-16T18:27:22Z","modified":"2026-06-17T03:07:14Z","products":[{"vendor":"enphase","product":"envoy_firmware"}],"references":[{"url":"https://enphase.com/en-us/products-and-services/envoy-and-combiner","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://stage2sec.com","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661a","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25754"},{"url":"https://github.com/advisories/GHSA-cq4j-2685-h9rw"}],"sources":{"cve":[{"id":"CVE-2020-25754","description":"An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.","status":"published","published":"2021-06-16T18:27:22Z","modified":"2024-08-04T15:40:36.984Z","updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2020-18405","description":"An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.","status":"published","published":"2021-06-16T18:27:22Z","modified":"2024-08-04T15:40:36Z","updated_at":"2026-11-03T03:07:16.74035Z"}],"ghsa":[{"id":"GHSA-cq4j-2685-h9rw","title":"An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for...","description":"An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.","status":"published","published":"2022-05-24T19:05:25Z","modified":"2023-01-29T05:07:01Z","cwes":["CWE-916"],"updated_at":"2026-11-02T14:46:08.233339Z"}],"nvd":[{"id":"CVE-2020-25754","description":"An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.","status":"published","published":"2021-06-16T19:15:27.597Z","modified":"2026-06-17T03:07:14.78Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","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-916"],"updated_at":"2026-11-02T14:06:43.288951Z"}]}}