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    CVE-2026-5267

    Ciena Navigator Network Control Suite (NCS) contains an information exposure vulnerability in an event-streaming API that does not properly enforce authentication. An unauthenticated attacker with network access to the affected service could access the event stream and potentially obtain sensitive information.

    Published:Sep 25, 2026
    Last Modified:Sep 26, 2026
    EPS:Sep 25, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    Ciena
    Product
    Navigator Ncs

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High