Overview
The cybersecurity landscape is continually evolving with new threats and vulnerabilities emerging every day. One such recent discovery is a critical vulnerability identified in the Tenda FH451 1.0.0.9. This vulnerability, labeled as CVE-2025-5080, poses a severe threat to the security of systems that use the affected product. It primarily impacts the webExcptypemanFilter function of the file /goform/webExcptypemanFilter, potentially leading to system compromise or data leakage. Given its critical nature and the potential for remote execution, this vulnerability warrants immediate attention and action.
Vulnerability Summary
CVE ID: CVE-2025-5080
Severity: Critical (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 FH451 | 1.0.0.9
How the Exploit Works
The vulnerability exists due to insufficient input validation in the webExcptypemanFilter function of the file /goform/webExcptypemanFilter. An attacker can exploit this vulnerability by manipulating the ‘page’ argument, causing a stack-based buffer overflow. This exploitation can lead to arbitrary code execution, system compromise, or data leakage, thereby having severe consequences.
Conceptual Example Code
Below is a conceptual example of how this vulnerability might be exploited:
POST /goform/webExcptypemanFilter HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
page=AAAAAAAAAAAAAA...[long string of A's]...In the above example, the ‘page’ argument is flooded with an overly long string, causing a buffer overflow. Note that this is a conceptual example, and actual exploitation would likely involve more sophisticated techniques, such as carefully crafting the payload to overwrite the return address with a malicious function’s address.
Mitigation Guidance
To mitigate the CVE-2025-5080 vulnerability, affected users should apply the vendor patch as soon as it becomes available. If an immediate patch is not available, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These systems can potentially block or alert on attempts to exploit this vulnerability. However, these are not long-term solutions and should be used as a stop-gap while awaiting a patch from the vendor. Regular patching and updating of systems is paramount in ensuring the security of any system.