{"id":"CVE-2025-7635","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-7635","generatedAt":"2026-10-27T23:08:22.190Z","title":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.","description":"Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.","published":"2025-09-09T20:15:51.000Z","lastModified":"2026-06-17T10:05:23.000Z","status":"Analyzed","sourceIdentifier":"help@fluidattacks.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","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/M"},"cwe":["CWE-306"],"affected":["calix/calix gigacenter ont"],"epss":{"score":0.00354,"percentile":0.28907,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://fluidattacks.com/advisories/sal","tags":["Exploit","Mitigation","Third Party Advisory"],"source":"help@fluidattacks.com"},{"url":"https://revers3everything.com/calix-case-five-0-days-five-cves/","tags":["Third Party Advisory"],"source":"help@fluidattacks.com"},{"url":"https://www.calix.com","tags":["Product"],"source":"help@fluidattacks.com"},{"url":"https://fluidattacks.com/advisories/sal","tags":["Exploit","Mitigation","Third Party Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-7635","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}