CVE-2026-5269

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...

CVE-2026-5270

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 unauthenticated attacker to manipulate...

CVE-2026-5270

Technical details (affected product versions, components, root cause, exploitability, and fixes) are not publicly provided in the supplied documents. Monitor for updates from official sources (NVD, ENISA EUVD, CVE listings) for concrete mitigation guidance.