Overview
The cybersecurity landscape is constantly evolving, with new vulnerabilities emerging that threaten the integrity, confidentiality, and availability of information systems. CVE-2025-27129 is one such security flaw that poses significant risks to users of the Tenda AC6 V5.0 V02.03.01.110. This vulnerability allows an attacker to bypass the HTTP authentication mechanism, leading to potential arbitrary code execution. The severity of this vulnerability underscores the importance of prompt mitigation steps to prevent potential system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-27129
Severity: Critical (9.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Tenda AC6 | V5.0 V02.03.01.110
How the Exploit Works
The exploit works by sending specially crafted HTTP requests to the target device. The vulnerability lies in the HTTP authentication functionality of the Tenda AC6 V5.0 V02.03.01.110, which fails to properly validate the authenticity of incoming requests. As a result, an attacker can bypass the authentication mechanism, execute arbitrary code, and gain unauthorized access to the system.
Conceptual Example Code
The following is a
conceptual
example of how the vulnerability might be exploited. This sample HTTP request demonstrates how an attacker could potentially send a malicious payload to the vulnerable endpoint:
POST /vulnerable/auth HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "username": "admin", "password": "1234", "malicious_payload": "..." }In this example, the attacker attempts to authenticate as an ‘admin’ with a weak password ‘1234’, while delivering a malicious payload in the same request. If successful, the attacker could execute arbitrary code, potentially leading to system compromise and data leakage.
Mitigation and Prevention
To mitigate the risk posed by this vulnerability, it is recommended to apply the vendor patch as soon as it becomes available. In the interim, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation. These tools can help detect and block malicious HTTP requests, thereby preventing potential exploitation of this vulnerability. Regularly updating and patching software, employing strong authentication mechanisms, and adhering to best security practices can also help prevent such vulnerabilities in the future.