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        "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": "2026-07-08T20:18:06.557Z"
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                "dateUpdated": "2026-07-08T20:18:06.557Z"
            },
            "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": "unaffected"
                },
                {
                    "vendor": "CIENA",
                    "product": "6500 T-Series",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "R16.1 and prior"
                        }
                    ],
                    "defaultStatus": "unaffected"
                },
                {
                    "vendor": "CIENA",
                    "product": "PTS",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "R16.1 and prior"
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                    ],
                    "defaultStatus": "unaffected"
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                {
                    "vendor": "CIENA",
                    "product": "CPL",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "R12.63 and prior"
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                    ],
                    "defaultStatus": "unaffected"
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            ],
            "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.",
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                            "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>"
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            ],
            "references": [
                {
                    "url": "https://www.ciena.com/product-security",
                    "tags": [
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            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Ciena recommends upgrading to the latest\navailable remediated release. For additional details, refer to myciena.com for\ncurrent software versions, fixes, and security advisories.",
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        "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"
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-06T18:42:35.509616Z",
                                "id": "CVE-2026-5268",
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                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-06T18:42:39.325Z"
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