Overview
The vulnerability we are focusing on today is CVE-2025-26062, a critical security flaw affecting certain versions of Intelbras RX routers. Due to an access control issue, a malevolent actor could access the router’s settings file without authentication. This vulnerability exposes potentially sensitive information from the current settings, thus presenting a significant risk to the integrity and confidentiality of the systems relying on these routers. With a high severity score of 9.8, it is imperative for users and administrators to understand the nature of this vulnerability and take immediate steps to mitigate its potential impacts.
Vulnerability Summary
CVE ID: CVE-2025-26062
Severity: Critical (CVSS 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System Compromise, Data Leakage
Affected Products
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Product | Affected Versions
Intelbras RX1500 | v2.2.9
Intelbras RX3000 | v1.0.11
How the Exploit Works
The exploit is a result of poor access control on the router’s settings file. An attacker can send a network request to the router, and due to the absence of proper authentication checks, the request is processed, granting access to the settings file. This file could contain sensitive data like network configurations, usernames, passwords, and other critical system information. If accessed, this information could be manipulated or used for further attacks.
Conceptual Example Code
The following is a conceptual HTTP request that could potentially exploit this vulnerability:
GET /settingsfile HTTP/1.1
Host: target.router.ipThis simple request could be enough to retrieve the settings file due to the lack of proper authentication measures in place.
Mitigation and Recommendations
To mitigate this vulnerability, Intelbras has issued patches for the affected versions of their RX router series. Users are urged to apply these patches as soon as possible. If immediate patching is not feasible, temporary mitigation measures such as implementing a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) could be employed. These systems can monitor network traffic and block suspicious requests, thus providing an additional layer of security. However, these are only stop-gap measures and cannot replace the need for patching the affected systems.
In the long term, organizations need to implement robust security measures, including regular auditing of their network infrastructure, maintaining up-to-date systems, and educating employees about cybersecurity risks and best practices.