Vulnerability in Ciena Mcp
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 acco…
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Ciena Mcp — versions <= 8.0
- Ciena Navigator Ncs — versions 8.1
- Ciena Planner Plus Onprem — versions <= 4.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-5269?
- CVE-2026-5269 is a critical-severity vulnerability in Ciena Mcp, classified under CWE-1393. CVSS score: 9.8/10. Published 2026-07-14.
- How severe is CVE-2026-5269?
- Critical severity. CVSS v3 base score is 9.8 out of 10.