Overview
The Common Vulnerabilities and Exposures system has identified a severe security issue, dubbed CVE-2025-6560, that affects multiple wireless router models from Sapido. This vulnerability allows an unauthenticated remote attacker to directly access system configuration files and obtain plaintext administrator credentials, posing a serious security threat. The severity of this vulnerability emphasizes the importance of regular security updates and maintenance of devices, especially as the affected models are no longer supported by the vendor.
Vulnerability Summary
CVE ID: CVE-2025-6560
Severity: Critical (CVSS 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Unauthorized access to sensitive data, potential system compromise
Affected Products
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Product | Affected Versions
Sapido Wireless Router | All Unsupported Versions
How the Exploit Works
This exploit works by taking advantage of the Exposure of Sensitive Information vulnerability in Sapido wireless routers. An attacker can send a specially crafted request to the router, which does not properly authenticate or restrict access to its system configuration file. This allows the attacker to download the file and extract plaintext administrative credentials. With these credentials, the attacker can gain full control over the router.
Conceptual Example Code
The vulnerability might be exploited using a simple HTTP GET request to the router’s configuration file. A conceptual example of this might look as follows:
GET /system_configuration.cfg HTTP/1.1
Host: router_ip_addressWith the configuration file in their possession, an attacker could then extract the plaintext administrator credentials and gain full access to the router.
Mitigation Guidance
Given that the affected models are out of support, the best course of action is to replace the device entirely. If immediate replacement is not possible, consider using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to monitor and block malicious traffic, providing temporary mitigation for the vulnerability. Always ensure to regularly update and patch your devices to protect against known vulnerabilities.