A high-severity vulnerability has been identified in multiple Tenda networking products, including the Tenda FH1202 router. Successful exploitation by a remote attacker could allow for complete device compromise, leading to unauthorized network access, data interception, and the ability to launch further attacks against the internal network. Organizations are urged to apply vendor-supplied security updates immediately to mitigate this significant risk.

The vulnerability is a command injection flaw within the device's web-based management interface. Due to insufficient sanitization of user-supplied input on certain configuration pages, a remote, unauthenticated attacker can execute arbitrary operating system commands on the device. An attacker can exploit this by sending a specially crafted HTTP request to the management interface, gaining root-level control over the underlying operating system.

This vulnerability is rated as High severity with a CVSS score of 8.8. Exploitation could lead to severe business consequences, including a complete loss of confidentiality, integrity, and availability of the affected network device. An attacker could intercept sensitive data passing through the router, modify network traffic, use the compromised device as a pivot point to attack other systems on the internal network, or incorporate the device into a botnet for use in Distributed Denial-of-Service (DDoS) attacks. The specific risks to the organization include data breaches, network outages, reputational damage, and potential regulatory penalties.

Immediate Action:

• Apply vendor security updates immediately across all affected Tenda devices.
• Monitor for exploitation attempts by analyzing network traffic and system logs for anomalous activity targeting the device's management interface.
• Review historical access logs for any signs of compromise that may have occurred prior to patching.

Proactive Monitoring:

• Monitor firewall and web server logs for unusual or malformed HTTP requests directed at the device's management interface.
• Look for unexpected outbound connections originating from the router itself, which could indicate a compromise.
• Enable logging on the device and centralize logs to a SIEM for correlation and alerting on suspicious activity.

Compensating Controls:

• If patching cannot be performed immediately, restrict all access to the device's web management interface to a secure, isolated management network or specific trusted IP addresses.
• Ensure that remote (WAN) management is disabled. The management interface should never be exposed to the public internet.
• Place the device behind a Web Application Firewall (WAF) or an Intrusion Prevention System (IPS) with rules designed to detect and block command injection attacks.

Public Exploit Available: false

Due to the high severity (CVSS 8.8) of this vulnerability, we recommend that organizations treat its remediation as a top priority. Although CVE-2025-7532 is not currently listed on the CISA KEV catalog, its potential for complete remote device compromise makes it a critical threat. Organizations must immediately identify all vulnerable Tenda devices within their environments and apply the vendor-provided patches without delay. If patching is not immediately feasible, implement the suggested compensating controls to reduce the attack surface and mitigate risk.