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vuln-cve/data/2026/5xxx/CVE-2026-5268.json
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{
"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": "2026-07-08T20:18:06.557Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb",
"shortName": "Ciena",
"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"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "CIENA",
"product": "CPL",
"versions": [
{
"status": "affected",
"version": "R12.63 and prior"
}
],
"defaultStatus": "unaffected"
}
],
"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"
]
}
],
"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.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p>Ciena recommends upgrading to the latest\navailable remediated release. For additional details, refer to myciena.com for\ncurrent software versions, fixes, and security advisories.</p>"
}
]
}
],
"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"
}
}
]
}
}