Overview
The Common Vulnerabilities and Exposures (CVE) system has recently identified a significant security flaw, designated as CVE-2025-9298, affecting Tenda M3 1.0.0.12. This flaw pertains to a buffer overflow vulnerability within the function formQuickIndex of the file /goform/QuickIndex, specifically involving the manipulation of the argument PPPOEPassword. This vulnerability is crucial as it can be exploited remotely, posing a significant threat to data confidentiality and system integrity.
Vulnerability Summary
CVE ID: CVE-2025-9298
Severity: High (CVSS 8.8)
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 M3 | 1.0.0.12
How the Exploit Works
The vulnerability stems from inadequate boundary checks within the formQuickIndex function of the file /goform/QuickIndex in Tenda M3 1.0.0.12. By manipulating the PPPOEPassword argument, an attacker can trigger a stack-based buffer overflow. This can potentially allow an attacker to execute arbitrary code with the privileges of the process, leading to a system compromise or data leakage.
Conceptual Example Code
The following is a
conceptual
example of how the vulnerability might be exploited. This could be a malicious HTTP request sent to the vulnerable endpoint, exploiting the buffer overflow vulnerability.
POST /goform/QuickIndex HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
PPPOEPassword=<buffer overflow inducing string>In this example, “ represents a string of characters that is longer than the application expects, causing the buffer overflow.
Mitigation
To mitigate this vulnerability, users are advised to apply the vendor patch when it becomes available. In the meantime, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer temporary protection. These systems can detect and block attempts to exploit this vulnerability, thereby limiting potential damage.
