Unrated severityNVD Advisory· Published Jul 14, 2026· Updated Jul 15, 2026
Navigator NCS and MCP System Accounts with Default Passwords
CVE-2026-5269
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
2Patches
Vulnerability mechanics
References
1News mentions
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