CVE-2025-7635

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-7635", "assignerOrgId": "84fe0718-d6bb-4716-a7e8-81a6d1daa869", "state": "PUBLISHED", "assignerShortName": "Fluid Attacks", "dateReserved": "2025-07-14T12:49:39.283Z", "datePublished": "2025-09-09T20:08:37.767Z", "dateUpdated": "2025-09-12T13:56:22.271Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "modules": ["Quantenna SoC"], "product": "GigaCenter ONT", "vendor": "Calix", "versions": [{"status": "affected", "version": "844E"}, {"status": "affected", "version": "844G"}, {"status": "affected", "version": "844GE"}, {"status": "affected", "version": "854GE"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:calix:gigacenter_ont:844e:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:gigacenter_ont:844g:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:gigacenter_ont:844ge:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:gigacenter_ont:854ge:*:*:*:*:*:*:*", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.<p>This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.</p>"}], "value": "Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE."}], "impacts": [{"capecId": "CAPEC-114", "descriptions": [{"lang": "en", "value": "CAPEC-114 Authentication Abuse"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "baseScore": 8.7, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-306", "description": "CWE-306 Missing Authentication for Critical Function", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "84fe0718-d6bb-4716-a7e8-81a6d1daa869", "shortName": "Fluid Attacks", "dateUpdated": "2025-09-12T13:56:22.271Z"}, "references": [{"tags": ["third-party-advisory"], "url": "https://fluidattacks.com/advisories/sal"}, {"tags": ["product", "related"], "url": "https://www.calix.com"}, {"tags": ["third-party-advisory"], "url": "https://revers3everything.com/calix-case-five-0-days-five-cves/"}], "source": {"discovery": "UNKNOWN"}, "title": "Calix GigaCenter ONT - Unauthenticated Telnet", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"references": [{"url": "https://fluidattacks.com/advisories/sal", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-09-10T13:42:42.694051Z", "id": "CVE-2025-7635", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-09-10T13:42:48.161Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-7635", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-09-10T13:42:42.694051Z"}}}], "references": [{"url": "https://fluidattacks.com/advisories/sal", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-09-10T13:42:32.080Z"}}], "cna": {"title": "Calix GigaCenter ONT - Unauthenticated Telnet", "source": {"discovery": "UNKNOWN"}, "impacts": [{"capecId": "CAPEC-114", "descriptions": [{"lang": "en", "value": "CAPEC-114 Authentication Abuse"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "ADJACENT", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "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", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Calix", "modules": ["Quantenna SoC"], "product": "GigaCenter ONT", "versions": [{"status": "affected", "version": "844E"}, {"status": "affected", "version": "844G"}, {"status": "affected", "version": "844GE"}, {"status": "affected", "version": "854GE"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://fluidattacks.com/advisories/sal", "tags": ["third-party-advisory"]}, {"url": "https://www.calix.com", "tags": ["product", "related"]}, {"url": "https://revers3everything.com/calix-case-five-0-days-five-cves/", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "value": "Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.", "supportingMedia": [{"type": "text/html", "value": "Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.<p>This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-306", "description": "CWE-306 Missing Authentication for Critical Function"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:calix:gigacenter_ont:844e:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:gigacenter_ont:844g:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:gigacenter_ont:844ge:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:gigacenter_ont:854ge:*:*:*:*:*:*:*", "vulnerable": true}], "operator": "OR"}], "operator": "OR"}], "providerMetadata": {"orgId": "84fe0718-d6bb-4716-a7e8-81a6d1daa869", "shortName": "Fluid Attacks", "dateUpdated": "2025-09-12T13:56:22.271Z"}}}, "cveMetadata": {"cveId": "CVE-2025-7635", "state": "PUBLISHED", "dateUpdated": "2025-09-12T13:56:22.271Z", "dateReserved": "2025-07-14T12:49:39.283Z", "assignerOrgId": "84fe0718-d6bb-4716-a7e8-81a6d1daa869", "datePublished": "2025-09-09T20:08:37.767Z", "assignerShortName": "Fluid Attacks"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "modules": ["Quantenna SoC"], "product": "GigaCenter ONT", "vendor": "Calix", "versions": [{"status": "affected", "version": "844E"}, {"status": "affected", "version": "844G"}, {"status": "affected", "version": "844GE"}, {"status": "affected", "version": "854GE"}]}], "source": "help@fluidattacks.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:*:*:*:*:*:*:*:*", "matchCriteriaId": "E285ED64-5A84-408D-82C0-2884BCFAB9D1", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:844e:*:*:*:*:*:*:*", "matchCriteriaId": "FADBB0EC-3887-4479-BD00-0B5C889F762A", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:844g:*:*:*:*:*:*:*", "matchCriteriaId": "84BC001C-DA8C-4A29-B7F6-158FC235669F", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:844ge:*:*:*:*:*:*:*", "matchCriteriaId": "B7C3D463-3D1F-4EB4-9E2B-EA828589CDBE", "vulnerable": true}, {"criteria": "cpe:2.3:a:calix:calix_gigacenter_ont:854ge:*:*:*:*:*:*:*", "matchCriteriaId": "68F177AF-338D-4637-BE70-103C2DD2DC5C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE."}], "id": "CVE-2025-7635", "lastModified": "2026-06-17T10:05:23.343", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "help@fluidattacks.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-7635", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-09-10T13:42:42.694051Z", "version": "2.0.3"}}]}, "published": "2025-09-09T20:15:50.673", "references": [{"source": "help@fluidattacks.com", "tags": ["Exploit", "Mitigation", "Third Party Advisory"], "url": "https://fluidattacks.com/advisories/sal"}, {"source": "help@fluidattacks.com", "tags": ["Third Party Advisory"], "url": "https://revers3everything.com/calix-case-five-0-days-five-cves/"}, {"source": "help@fluidattacks.com", "tags": ["Product"], "url": "https://www.calix.com"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Third Party Advisory"], "url": "https://fluidattacks.com/advisories/sal"}], "sourceIdentifier": "help@fluidattacks.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "help@fluidattacks.com", "type": "Secondary"}]}

{}

{"created": "2025-09-12T09:11:41.069941+00:00", "updated": "2025-09-12T09:11:41.069991+00:00", "vendors": ["calix", "calix$PRODUCT$gigacenter_ont"]}