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.
INFO
Published Date :
July 14, 2026, 11:17 p.m.
Last Modified :
July 14, 2026, 11:17 p.m.
Remotely Exploit :
No
Source :
7bd90cf1-1651-495e-9ae8-9415fb3c9feb
Affected Products
The following products are affected by CVE-2026-5269
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Change default passwords for all system accounts.
- Implement strong password policies.
- Restrict unnecessary system account access.
- Review and audit account permissions regularly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-5269.
| URL | Resource |
|---|---|
| https://www.ciena.com/product-security |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-5269 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-5269
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-5269 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-5269 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 7bd90cf1-1651-495e-9ae8-9415fb3c9feb
Jul. 14, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'CIENA', 'product': 'Navigator NCS', 'versions': [{'status': 'affected', 'version': '8.1'}], 'defaultStatus': 'unaffected'}, {'vendor': 'CIENA', 'product': 'MCP', 'versions': [{'status': 'affected', 'version': '<= 8.0'}], 'defaultStatus': 'unaffected'}, {'vendor': 'CIENA', 'product': 'Planner Plus OnPrem', 'versions': [{'status': 'affected', 'version': '<= 4.1'}], 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-1393 Added Reference https://www.ciena.com/product-security