CVE-2026-5269

Awaiting Analysis Awaiting Analysis - Queue

Hidden System Accounts with Default Passwords in Ciena Navigator NCS and MCP

Publication date: 2026-07-14

Last updated on: 2026-07-15

Assigner: Ciena

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-15

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-5269

EUVD

EUVD-2026-44574

Affected Vendors & Products

Vendor	Product	Version / Range
ciena	navigator_network_control_suite	*
ciena	manage_control_plan	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-1393	The product uses default passwords for potentially critical functionality.

Attack-Flow Graph

Executive Summary

CVE-2026-5269 involves hidden system accounts in Ciena's Navigator Network Control Suite (NCS) and Manage Control Plan (MCP) with default and potentially predictable passwords. These accounts have limited permissions but could be exploited in combination with other weaknesses to escalate privileges.

Impact Analysis

An attacker could use these hidden accounts to gain unauthorized access, potentially leading to system compromise or privilege escalation. This may allow them to take control of affected systems or disrupt network operations.

Compliance Impact

This vulnerability could lead to unauthorized access, violating data protection requirements in GDPR and HIPAA. Organizations may face compliance failures due to insufficient access controls and potential data breaches.

Mitigation Strategies

Immediately identify and disable any hidden system accounts with default passwords in Ciena's Navigator Network Control Suite (NCS) and Manage Control Plan (MCP). Change default passwords to strong, unique values if these accounts are required for operations.

Hi! I’m here to help you understand CVE-2026-5269. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70