Overview
The security landscape is constantly evolving, with new vulnerabilities being discovered and exploited every day. One such vulnerability, CVE-2025-7914, which has been identified as a critical risk, affects Tenda AC6 15.03.06.50. This vulnerability is related to the function setparentcontrolinfo of the httpd component in the mentioned product version. If exploited, it could lead to a buffer overflow, potentially compromising the system and/or leading to data leakage.
Being a critical vulnerability, CVE-2025-7914 poses a serious threat to users and organizations using the affected version of Tenda AC6. Its potential to compromise systems and leak data makes it a significant concern for anyone operating within this digital environment. Therefore, understanding this vulnerability, its impact, and how to mitigate it is crucial for maintaining cybersecurity.
Vulnerability Summary
CVE ID: CVE-2025-7914
Severity: Critical, CVSS Score 8.8
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and/or data leakage
Affected Products
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Product | Affected Versions
Tenda AC6 | 15.03.06.50
How the Exploit Works
The vulnerability occurs in the function setparentcontrolinfo of the httpd component of Tenda AC6. Attackers can exploit this vulnerability by sending specially crafted data to the setparentcontrolinfo function. This unexpected input can cause the function to overflow its buffer, a section of memory allocated for temporarily storing data. When this overflow occurs, an attacker can inject malicious code, which the system then executes. The execution of this code can lead to system compromise and data leakage.
Conceptual Example Code
The following is a conceptual representation of how an attacker might exploit this vulnerability:
POST /setparentcontrolinfo HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "unexpected_data": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA..." }In the above example, `”unexpected_data”` is a long string that exceeds the buffer’s capacity, causing it to overflow and potentially allowing an attacker to inject malicious code into the system.
Mitigation Guidance
The primary mitigation strategy for CVE-2025-7914 is to apply the patch provided by the vendor, which rectifies the vulnerability. In situations where the patch cannot be immediately applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer a temporary mitigation strategy by detecting and blocking attempts to exploit this vulnerability. However, these should only be considered short-term solutions, and the vendor’s patch should be applied as soon as feasible to ensure the highest level of protection.