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OpenAdvisories

Vendor

CIENA

4 known vulnerabilities.

Products

Navigator NCS 3 MCP 2 Planner Plus OnPrem 2 6500 S-Series 1 6500 T-Series 1 PTS 1 CPL 1
All Critical High Medium Low Exploited only Public exploit

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  • High 7.5
    CVE-2026-5267

    Unauthenticated Event Stream Exposure of Session Tokens in Navigator NCS

    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 …

    CIENA Navigator NCS