Search

Find a vulnerability

Search criteria

    2 vulnerabilities found for 6500 S-Series by CIENA

    CVE-2026-5268 (GCVE-0-2026-5268)

    Vulnerability from nvd – Published: 2026-07-06 15:25 – Updated: 2026-07-06 18:42
    VLAI
    Title
    SFTP Server Authentication Weakness
    Summary
    An authentication bypass vulnerability exists in the default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass security controls and gain unauthorized access to the underlying filesystem. Successful exploitation could allow an attacker to read or modify system files.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-288 - Authentication bypass using an alternate path or channel
    Assigner
    References
    URL Tags
    https://www.ciena.com/product-security vendor-advisory
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-5268",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-06T18:42:35.509616Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-06T18:42:39.325Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "6500 S-Series",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R16.96 and prior"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "6500 T-Series",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R16.1 and prior"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "PTS",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R16.1 and prior"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "CPL",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R12.63 and prior"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eAn 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.\u003c/p\u003e"
            }
          ],
          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-288",
              "description": "CWE-288 Authentication bypass using an alternate path or channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-06T15:25:56.938Z",
        "orgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb",
        "shortName": "Ciena"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.ciena.com/product-security"
        }
      ],
      "title": "SFTP Server Authentication Weakness",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb",
    "assignerShortName": "Ciena",
    "cveId": "CVE-2026-5268",
    "datePublished": "2026-07-06T15:25:56.938Z",
    "dateReserved": "2026-03-31T19:44:32.296Z",
    "dateUpdated": "2026-07-06T18:42:39.325Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-5268 (GCVE-0-2026-5268)

    Vulnerability from cvelistv5 – Published: 2026-07-06 15:25 – Updated: 2026-07-06 18:42
    VLAI
    Title
    SFTP Server Authentication Weakness
    Summary
    An authentication bypass vulnerability exists in the default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass security controls and gain unauthorized access to the underlying filesystem. Successful exploitation could allow an attacker to read or modify system files.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-288 - Authentication bypass using an alternate path or channel
    Assigner
    References
    URL Tags
    https://www.ciena.com/product-security vendor-advisory
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-5268",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-06T18:42:35.509616Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-06T18:42:39.325Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "6500 S-Series",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R16.96 and prior"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "6500 T-Series",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R16.1 and prior"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "PTS",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R16.1 and prior"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "CPL",
          "vendor": "CIENA",
          "versions": [
            {
              "status": "affected",
              "version": "R12.63 and prior"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eAn 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.\u003c/p\u003e"
            }
          ],
          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-288",
              "description": "CWE-288 Authentication bypass using an alternate path or channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-06T15:25:56.938Z",
        "orgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb",
        "shortName": "Ciena"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.ciena.com/product-security"
        }
      ],
      "title": "SFTP Server Authentication Weakness",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7bd90cf1-1651-495e-9ae8-9415fb3c9feb",
    "assignerShortName": "Ciena",
    "cveId": "CVE-2026-5268",
    "datePublished": "2026-07-06T15:25:56.938Z",
    "dateReserved": "2026-03-31T19:44:32.296Z",
    "dateUpdated": "2026-07-06T18:42:39.325Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}