CVE-2025-6110 in FH1201
Summary
by MITRE • 06/16/2025
A vulnerability classified as critical has been found in Tenda FH1201 1.2.0.14(408). This affects an unknown part of the file /goform/SafeMacFilter. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 06/16/2025
This critical vulnerability in Tenda FH1201 router firmware version 1.2.0.14(408) represents a significant security risk that allows remote exploitation through a stack-based buffer overflow condition. The flaw exists within the web interface component located at /goform/SafeMacFilter, which processes user-supplied input without adequate bounds checking. When an attacker sends a specially crafted request containing an overly long page argument to this specific endpoint, the application fails to validate the input length before copying it to a fixed-size stack buffer, resulting in memory corruption that can be leveraged for arbitrary code execution. This vulnerability classifies under CWE-121 Stack-based Buffer Overflow, which is a well-documented weakness that has been exploited in numerous high-profile security incidents throughout the industry. The remote attack vector means that threat actors do not require physical access to the device or network proximity to exploit this weakness, making it particularly dangerous for enterprise and residential networks. The public disclosure of exploit code significantly increases the risk level, as it removes the requirement for sophisticated exploitation techniques and allows even less skilled attackers to potentially compromise affected devices. The attack surface is broad since the vulnerability affects the router's web management interface, which is typically accessible from external networks for administrative purposes, and the stack-based nature of the overflow provides attackers with predictable memory layout control that can be used to overwrite return addresses and execute malicious code. The impact extends beyond simple privilege escalation as compromised routers can serve as entry points for broader network infiltration, enabling attackers to conduct man-in-the-middle attacks, redirect traffic, or establish persistent backdoors within the network infrastructure. According to ATT&CK framework, this vulnerability maps to T1210 Exploitation of Remote Services and T1071.001 Application Layer Protocol Web Protocols, as it exploits a web-based interface to gain unauthorized access to network infrastructure. Organizations using affected Tenda FH1201 devices should immediately implement network segmentation to isolate critical systems from potentially compromised routers, disable unnecessary remote management features, and deploy network monitoring solutions to detect anomalous traffic patterns that may indicate exploitation attempts. The most effective mitigation strategy involves applying the latest firmware updates from Tenda, as the vendor should have addressed this vulnerability through proper input validation and buffer management techniques. Additionally, implementing web application firewalls and network access control lists that restrict access to the vulnerable management interface can provide defense-in-depth measures while waiting for official patches to be deployed across all affected devices in the network infrastructure.