Overview
In our ongoing commitment to cybersecurity, we bring to your attention a critical vulnerability discovered in Tenda AX1803 1.0.0.1, a widely used network appliance. This vulnerability, designated as CVE-2025-7597, could potentially allow malicious attackers to compromise systems remotely, leading to possible system compromise and data leakage. This vulnerability is especially concerning due to its high severity, as indicated by its CVSS score of 8.8, and the fact that details of the exploit have been publicly disclosed, increasing the likelihood of potential misuse by threat actors.
Vulnerability Summary
CVE ID: CVE-2025-7597
Severity: Critical (8.8 CVSS)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Tenda AX1803 | 1.0.0.1
How the Exploit Works
The vulnerability resides in the formSetMacFilterCfg function of the file /goform/setMacFilterCfg. By manipulating the argument ‘deviceList’, a stack-based buffer overflow can be triggered. The buffer overflow occurs when more data is put into a fixed-length buffer than it can handle, causing an overflow of data into adjacent memory locations. This can overwrite other data or even code in memory, potentially leading to arbitrary code execution.
Conceptual Example Code
The following is a conceptual example of how this vulnerability might be exploited:
POST /goform/setMacFilterCfg HTTP/1.1
Host: vulnerable-device-ip
Content-Type: application/x-www-form-urlencoded
deviceList=AAAAAAAAAAAAAAA....(excessive length)....In this example, the ‘deviceList’ argument is filled with an excessive amount of data (represented by ‘A’s). This causes the buffer overflow, which could be used to overwrite memory and potentially execute malicious code.
It is critical for users and administrators of Tenda AX1803 1.0.0.1 to apply the vendor patch immediately to mitigate this vulnerability. Alternatively, as a temporary solution, a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can be used for mitigation until the patch can be applied. Please stay vigilant and ensure your systems are always up-to-date to prevent falling victim to such exploits.