Overview
CVE-2025-65014 is a low-severity security vulnerability identified in LibreNMS, a popular auto-discovering PHP/MySQL/SNMP based network monitoring tool. This vulnerability resides in the user management functionality and stems from a weak password policy that allows administrators to create user accounts with extremely weak and predictable passwords, such as “12345678”. This significantly increases the risk of successful brute-force and credential stuffing attacks against the LibreNMS platform.
Technical Details
The vulnerability lies in the lack of robust password policy enforcement within the LibreNMS user management interface. Administrators can create new user accounts or modify existing ones without being forced to adhere to minimum password complexity requirements (e.g., minimum length, inclusion of special characters, etc.). This allows for the creation of accounts with easily guessable passwords, making the system vulnerable to unauthorized access.
Specifically, versions prior to 25.11.0 of LibreNMS are affected.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) assigns this vulnerability a score of 3.7, indicating a LOW severity. This score is derived from the following factors:
- Attack Vector: Network (AV:N)
- Attack Complexity: Low (AC:L)
- Privileges Required: High (PR:H) – Requires administrator privileges to exploit.
- User Interaction: None (UI:N)
- Scope: Unchanged (S:U)
- Confidentiality Impact: Low (C:L)
- Integrity Impact: Low (I:L)
- Availability Impact: None (A:N)
While the severity is rated as low, the potential impact on an organization’s network monitoring capabilities should not be ignored.
Possible Impact
Successful exploitation of this vulnerability could lead to the following consequences:
- Unauthorized Access: Attackers could gain access to the LibreNMS platform using compromised accounts.
- Data Breach: Access to LibreNMS could expose sensitive network monitoring data, including device configurations, performance metrics, and security alerts.
- System Disruption: Attackers could potentially modify LibreNMS configurations or interfere with monitoring processes, leading to disruptions in network visibility.
- Lateral Movement: In some cases, compromised LibreNMS accounts could be used as a stepping stone to gain access to other systems on the network.
Mitigation or Patch Steps
To mitigate the risk posed by CVE-2025-65014, it is strongly recommended to upgrade your LibreNMS installation to version 25.11.0 or later. This version includes a patch that enforces a stronger password policy.
Additionally, consider the following best practices:
- Enforce Strong Passwords: Even after upgrading, ensure that all LibreNMS user accounts use strong, unique passwords.
- Implement Multi-Factor Authentication (MFA): Enable MFA for all user accounts to provide an additional layer of security.
- Regular Security Audits: Conduct regular security audits of your LibreNMS installation and network infrastructure to identify and address potential vulnerabilities.
- Principle of Least Privilege: Ensure that users have only the necessary permissions to perform their duties.
