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Vendor

CIENA

4 known vulnerabilities.

CIENA at a glance

Last 12 months
4
Critical · all time
3
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 3 5 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 0 vulnerabilities May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 3 vulnerabilities, 3 critical August 2026: 0 vulnerabilities September 2026: 1 vulnerability Sep October 2026: 0 vulnerabilities November 2026: 0 vulnerabilities
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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

4 results · Feed

  • 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
  • Critical 9.8
    CVE-2026-5269

    Navigator NCS and MCP System Accounts with Default Passwords

    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 limit…

    CIENA Navigator NCS MCP Planner Plus OnPrem
  • Critical 9.8
    CVE-2026-5270

    Authentication Bypass in Navigator and Blue Planet Products

    An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an …

    CIENA Blue Planet Navigator NCS Planner Plus OnPrem
  • Critical 9.1
    CVE-2026-5268

    SFTP Server Authentication Weakness

    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 underlyi…

    CIENA 6500 T-Series CPL 6500 S-Series