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 ha…
Published: 2026-07-14 · CVSS: 9.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7