{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5268", "assignerOrgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb", "state": "PUBLISHED", "assignerShortName": "Ciena", "dateReserved": "2026-03-31T19:44:32.296Z", "datePublished": "2026-07-06T15:25:56.938Z", "dateUpdated": "2026-07-06T18:42:39.325Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb", "shortName": "Ciena", "dateUpdated": "2026-07-06T15:25:56.938Z"}, "title": "SFTP Server Authentication Weakness", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-288", "description": "CWE-288 Authentication bypass using an alternate path or channel", "type": "CWE"}]}], "affected": [{"vendor": "CIENA", "product": "6500 S-Series", "versions": [{"status": "affected", "version": "R16.96 and prior"}], "defaultStatus": "affected"}, {"vendor": "CIENA", "product": "6500 T-Series", "versions": [{"status": "affected", "version": "R16.1 and prior"}], "defaultStatus": "affected"}, {"vendor": "CIENA", "product": "PTS", "versions": [{"status": "affected", "version": "R16.1 and prior"}], "defaultStatus": "affected"}, {"vendor": "CIENA", "product": "CPL", "versions": [{"status": "affected", "version": "R12.63 and prior"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "An authentication bypass vulnerability exists in\nthe default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass\nsecurity controls and gain unauthorized access to the underlying filesystem.\nSuccessful exploitation could allow an attacker to read or modify system files.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>An authentication bypass vulnerability exists in\nthe default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass\nsecurity controls and gain unauthorized access to the underlying filesystem.\nSuccessful exploitation could allow an attacker to read or modify system files.</p>"}]}], "references": [{"url": "https://www.ciena.com/product-security", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-07-06T18:42:35.509616Z", "id": "CVE-2026-5268", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-07-06T18:42:39.325Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-5268", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-07-06T18:42:35.509616Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-06T18:42:28.543Z"}}], "cna": {"title": "SFTP Server Authentication Weakness", "affected": [{"vendor": "CIENA", "product": "6500 S-Series", "versions": [{"status": "affected", "version": "R16.96 and prior"}], "defaultStatus": "affected"}, {"vendor": "CIENA", "product": "6500 T-Series", "versions": [{"status": "affected", "version": "R16.1 and prior"}], "defaultStatus": "affected"}, {"vendor": "CIENA", "product": "PTS", "versions": [{"status": "affected", "version": "R16.1 and prior"}], "defaultStatus": "affected"}, {"vendor": "CIENA", "product": "CPL", "versions": [{"status": "affected", "version": "R12.63 and prior"}], "defaultStatus": "affected"}], "references": [{"url": "https://www.ciena.com/product-security", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "An authentication bypass vulnerability exists in\nthe default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass\nsecurity controls and gain unauthorized access to the underlying filesystem.\nSuccessful exploitation could allow an attacker to read or modify system files.", "supportingMedia": [{"type": "text/html", "value": "<p>An authentication bypass vulnerability exists in\nthe default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass\nsecurity controls and gain unauthorized access to the underlying filesystem.\nSuccessful exploitation could allow an attacker to read or modify system files.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-288", "description": "CWE-288 Authentication bypass using an alternate path or channel"}]}], "providerMetadata": {"orgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb", "shortName": "Ciena", "dateUpdated": "2026-07-06T15:25:56.938Z"}}}, "cveMetadata": {"cveId": "CVE-2026-5268", "state": "PUBLISHED", "dateUpdated": "2026-07-06T18:42:39.325Z", "dateReserved": "2026-03-31T19:44:32.296Z", "assignerOrgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb", "datePublished": "2026-07-06T15:25:56.938Z", "assignerShortName": "Ciena"}, "dataVersion": "5.2"}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "R16.96 and prior"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "6500 S-Series", "source": "cna", "vendor": "CIENA"}, "product": "6500_s-series", "vendor": "ciena"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "R16.1 and prior"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "6500 T-Series", "source": "cna", "vendor": "CIENA"}, "product": "6500_t-series", "vendor": "ciena"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "R12.63 and prior"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "CPL", "source": "cna", "vendor": "CIENA"}, "product": "cpl", "vendor": "ciena"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "R16.1 and prior"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "PTS", "source": "cna", "vendor": "CIENA"}, "product": "pts", "vendor": "ciena"}], "created": "2026-07-06T22:40:58.010734+00:00", "updated": "2026-07-07T17:30:17.235806+00:00", "vendors": ["ciena", "ciena$PRODUCT$6500_s-series", "ciena$PRODUCT$6500_t-series", "ciena$PRODUCT$cpl", "ciena$PRODUCT$pts"]}