Overview
In the constantly evolving field of cybersecurity, new vulnerabilities are regularly identified and addressed. One such vulnerability has recently been discovered in the Tenda CH22 1.0.0.1. This vulnerability, identified as CVE-2025-9007, presents a serious risk to the integrity, availability, and confidentiality of the system and its data. It affects the function formeditFileName of the file /goform/editFileName, leading to a buffer overflow. This issue is particularly critical as the exploit has been disclosed to the public, thereby increasing the probability of its potential exploitation by malicious actors.
Vulnerability Summary
CVE ID: CVE-2025-9007
Severity: Critical (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Tenda CH22 | 1.0.0.1
How the Exploit Works
This vulnerability stems from a buffer overflow condition in the formeditFileName function of the /goform/editFileName file. The buffer overflow condition can be triggered remotely by sending specially crafted data to the system. When this data is processed by the formeditFileName function, it results in an overflow of the intended buffer. This overflow condition can potentially allow an attacker to execute arbitrary code on the system or cause the system to crash, leading to a denial of service.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. This hypothetical example demonstrates a HTTP request that includes a malicious payload.
POST /goform/editFileName HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
filename=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIn the above example, the ‘filename’ parameter is filled with a long string of ‘A’s, representing an overly large value that triggers the buffer overflow condition.
Mitigation Guidance
The best course of action to mitigate this vulnerability is to apply the vendor patch as soon as it becomes available. Until the patch is released, a temporary mitigation measure could be to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and prevent attempts to exploit this vulnerability.