CVE-2025-46273: Critical Vulnerability in UNI-NMS-Lite Can Grant Administrative Privileges to Unauthenticated Attacker

Overview

The cybersecurity world is abuzz with the recent discovery of a new vulnerability, CVE-2025-46273, affecting UNI-NMS-Lite. This vulnerability can potentially give an unauthenticated attacker full administrative privileges over all UNI-NMS managed devices. The risk posed by this vulnerability is massive, as it can lead to a system compromise or significant data leakage. Administrators of UNI-NMS-Lite managed devices must take immediate action to mitigate the risk as a failure to do so could lead to catastrophic consequences.

Vulnerability Summary

CVE ID: CVE-2025-46273
Severity: Critical (9.8/10 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Full system compromise and potential data leakage

Affected Products

Product | Affected Versions

UNI-NMS-Lite | All versions

How the Exploit Works

The vulnerability arises from the use of hard-coded credentials within the UNI-NMS-Lite. These credentials are accessible to anyone who can reach the system over the network. An unauthenticated, remote attacker can exploit this vulnerability by using these hard-coded credentials to gain full administrative access to all UNI-NMS managed devices. This access would allow the attacker to modify system configurations, access sensitive data, and potentially carry out other malicious activities.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This would be done by sending a network request to the target system using the hard-coded credentials:

GET /admin/login HTTP/1.1
Host: target.example.com
Authorization: Basic dW5pLW5tcy1saXRlOmhhcmRjb2RlZC1wYXNzd29yZA==

In this example, the `Authorization` header includes the Base64 encoded username and password (`uni-nms-lite:hardcoded-password`). After authenticating with these credentials, the attacker would have full administrative access to the system.

Mitigation Guidance

The recommended mitigation for CVE-2025-46273 is to apply the vendor patch as soon as it becomes available. In the meantime, administrators can use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block attempts to exploit this vulnerability. As a best practice, regularly updating and patching software can help prevent falling victim to such vulnerabilities.
Remember: vigilance and prompt action are your best defense against cybersecurity threats.