{"id":"CVE-2025-7635","aliases":["EUVD-2025-27466","GHSA-7rr9-q3x5-6c5c"],"status":"published","title":"Calix GigaCenter ONT - Unauthenticated Telnet","description":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-07","score":0.00354,"percentile":0.29359,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2025-09-09T20:08:37Z","modified":"2026-06-17T10:05:23Z","products":[{"vendor":"calix","product":"calix_gigacenter_ont"},{"vendor":"calix","product":"gigacenter ont"}],"references":[{"url":"https://fluidattacks.com/advisories/sal","tags":["third-party-advisory","exploit","Exploit","Mitigation","Third Party Advisory"]},{"url":"https://www.calix.com","tags":["product","related","Product"]},{"url":"https://revers3everything.com/calix-case-five-0-days-five-cves/","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-7635"},{"url":"https://revers3everything.com/calix-case-five-0-days-five-cves"},{"url":"https://github.com/advisories/GHSA-7rr9-q3x5-6c5c"}],"sources":{"cve":[{"id":"CVE-2025-7635","title":"Calix GigaCenter ONT - Unauthenticated Telnet","description":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.","status":"published","published":"2025-09-09T20:08:37.767Z","modified":"2025-09-12T13:56:22.271Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:32:51.544289Z"}],"euvd":[{"id":"EUVD-2025-27466","description":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.","status":"published","published":"2025-09-09T20:08:37Z","modified":"2025-09-12T13:56:22Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T20:31:44.524108Z"}],"ghsa":[{"id":"GHSA-7rr9-q3x5-6c5c","title":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue...","description":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.","status":"published","published":"2025-09-09T21:30:30Z","modified":"2025-12-22T21:30:32Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:05:19.281484Z"}],"nvd":[{"id":"CVE-2025-7635","description":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.","status":"published","published":"2025-09-09T20:15:50.673Z","modified":"2026-06-17T10:05:23.343Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:11:28.834562Z"}]}}