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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-5269

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. 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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

CIENA Navigator NCS

Default version status: unaffected

  • 8.1affected

CIENA MCP

Default version status: unaffected

  • <= 8.0affected

CIENA Planner Plus OnPrem

Default version status: unaffected

  • <= 4.1affected

References