{"api_version":"1","generated_at":"2026-07-16T03:05:37+00:00","cve":"CVE-2026-5269","urls":{"html":"https://cve.report/CVE-2026-5269","api":"https://cve.report/api/cve/CVE-2026-5269.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-5269","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-5269"},"summary":{"title":"Navigator NCS and MCP System Accounts with Default Passwords","description":"In Ciena's Navigator Network Control Suite (NCS) and Manage Control Plan (MCP), there are hidden system accounts used for internal software operations. Some of these accounts have default passwords that may be predictable. 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For additional details, refer to myciena.com for\ncurrent software versions, fixes, and security advisories.\n\n\n\n\n\n \n\n\n\n\n\nRemediation\nand Fixes: \n\n\n\n\n \n \n \n\n Products \n\n\n \n \n \n\nRemediated Version\n\n\n \n \n \n \n \n\nNavigator NCS\n\n\n \n \n \n\n>= 8.2, 8.1-P02\n\n\n \n \n \n \n \n\nMCP\n\n\n \n \n \n\n8.0-P04, 7.2-P07\n\n\n \n \n \n \n \n\nPlanner Plus OnPrem\n\n\n \n \n \n\n>= 4.2, 4.1-P01","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Special thanks to the team at TDC NET for their contribution.","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"5269","cve":"CVE-2026-5269","epss":"0.001450000","percentile":"0.041300000","score_date":"2026-07-15","updated_at":"2026-07-16 00:08:43"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"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:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-5269","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-07-15T14:30:47.245049Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-07-15T14:30:50.769Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Navigator NCS","vendor":"CIENA","versions":[{"status":"affected","version":"8.1"}]},{"defaultStatus":"unaffected","product":"MCP","vendor":"CIENA","versions":[{"status":"affected","version":"<= 8.0"}]},{"defaultStatus":"unaffected","product":"Planner Plus OnPrem","vendor":"CIENA","versions":[{"status":"affected","version":"<= 4.1"}]}],"credits":[{"lang":"en","type":"finder","value":"Special thanks to the team at TDC NET for their contribution."}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"In Ciena's Navigator Network Control Suite (NCS) and Manage Control Plan (MCP), there are hidden system accounts used for internal software operations. Some of these accounts have default passwords that may be predictable. While these accounts have very limited permissions on their own, an attacker could combine an attack using one of these accounts with other potential weaknesses to launch a more significant attack, possibly leading to escalation of privilege on the system. "}],"value":"In Ciena's Navigator Network Control Suite (NCS) and Manage Control Plan (MCP), there are hidden system accounts used for internal software operations. Some of these accounts have default passwords that may be predictable. While these accounts have very limited permissions on their own, an attacker could combine an attack using one of these accounts with other potential weaknesses to launch a more significant attack, possibly leading to escalation of privilege on the system."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1393","description":"CWE-1393 Use of default password","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-14T22:25:55.317Z","orgId":"7bd90cf1-1651-495e-9ae8-9415fb3c9feb","shortName":"Ciena"},"references":[{"url":"https://www.ciena.com/product-security"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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.

\n\n

 

\n\n

Remediation\nand Fixes:

\n\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
\n

 Products

\n 		\n

Remediated Version

\n
\n

Navigator NCS

\n 		\n

>= 8.2, 8.1-P02

\n
\n

MCP

\n 		\n

8.0-P04, 7.2-P07

\n
\n

Planner Plus OnPrem

\n 		\n

>= 4.2, 4.1-P01

\n
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