CVE-2026-5992 in F451
Summary
by MITRE • 04/10/2026
A vulnerability was determined in Tenda F451 1.0.0.7. This affects the function fromP2pListFilter of the file /goform/P2pListFilter. This manipulation of the argument page causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 05/16/2026
The vulnerability in Tenda F451 1.0.0.7 represents a critical stack-based buffer overflow condition within the fromP2pListFilter function of the /goform/P2pListFilter endpoint. This flaw exists in the router's web interface handling mechanism where the page argument parameter is not properly validated or constrained before being processed. The buffer overflow occurs when user-supplied input exceeds the allocated stack memory space, potentially allowing arbitrary code execution. The vulnerability resides in the firmware's handling of HTTP form data through the web management interface, making it accessible via network-based attacks. This represents a significant security risk as it allows remote attackers to execute malicious code on the affected device without requiring authentication. The exploitation of this vulnerability aligns with attack patterns documented in the attack technique matrix under technique T1210 for exploitation of remote services and T1059 for command and scripting interpreter usage. The vulnerability has been publicly disclosed, meaning that threat actors have access to exploitation methods and may actively target devices running this firmware version. According to CWE classification, this corresponds to CWE-121 Stack-based Buffer Overflow, which is a well-documented weakness in software development practices related to improper input validation and memory management. The impact of this vulnerability extends beyond simple code execution to potentially allow full system compromise including persistent backdoor installation, data exfiltration, and network reconnaissance capabilities.
The technical implementation of this buffer overflow stems from inadequate bounds checking within the web form processing layer of the router firmware. When the page argument parameter is submitted through the P2pListFilter endpoint, the system fails to validate the input length against the allocated buffer size, creating a condition where attacker-controlled data can overwrite adjacent stack memory locations. This memory corruption can be leveraged to overwrite return addresses, function pointers, or other critical program state information, enabling attackers to redirect execution flow to malicious code. The stack-based nature of this overflow means that the attack vector is particularly dangerous as it can be exploited through simple HTTP requests without requiring physical access or complex attack chains. The vulnerability's remote exploitability indicates that no local network presence is required for exploitation, making it accessible to attackers from anywhere on the internet. The attack surface is further expanded by the fact that this is a web-based interface vulnerability, meaning that the attack can be launched through standard web browsers or automated scanning tools. This type of vulnerability is commonly associated with the use of unsafe string handling functions such as strcpy, sprintf, or other C library functions that do not perform automatic bounds checking. The presence of a publicly disclosed exploit increases the risk profile significantly, as it removes the need for custom development of attack methods and allows for rapid deployment across vulnerable networks.
The operational impact of this vulnerability extends beyond immediate device compromise to create broader security implications for network infrastructure. Successful exploitation can result in complete takeover of the router, enabling attackers to modify network configurations, redirect traffic through malicious proxies, or establish persistent access points for further network infiltration. The compromised device may become part of a botnet, used for launching attacks against other systems, or serve as a pivot point for accessing internal network resources. Network administrators face the challenge of identifying vulnerable devices within their infrastructure, as the exploitation may not immediately produce visible symptoms. The vulnerability affects not only individual devices but also creates potential for cascading security failures when multiple devices in a network share similar firmware versions. This type of vulnerability represents a significant concern for enterprise and home network security, as routers often serve as the primary gateway and control point for network traffic. The risk is compounded by the fact that many users are unaware of firmware updates or fail to apply them, leaving devices exposed to known exploits for extended periods. Security frameworks such as NIST SP 800-53 and ISO 27001 would classify this vulnerability as requiring immediate remediation due to its remote exploitability and potential for privilege escalation.
Mitigation strategies for this vulnerability should prioritize immediate firmware updates from Tenda, as the manufacturer has likely released patches addressing this specific buffer overflow condition. Network segmentation and access control measures can help limit the potential impact if devices remain unpatched, while monitoring for unusual network traffic patterns may help detect exploitation attempts. The implementation of web application firewalls and intrusion detection systems can provide additional layers of protection by detecting and blocking malicious requests to the vulnerable endpoint. Security teams should conduct comprehensive inventory assessments to identify all affected devices and prioritize remediation efforts based on network criticality and exposure levels. Regular vulnerability scanning and penetration testing should be implemented to identify similar issues in other network infrastructure components. The vulnerability also highlights the importance of secure coding practices, particularly around input validation and memory management, which should be addressed in development lifecycle processes. Organizations should implement automated patch management solutions to ensure timely deployment of security updates across all network devices. Additionally, network administrators should disable unnecessary web management interfaces and restrict access to trusted IP addresses to minimize exposure windows. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date firmware and implementing robust security monitoring practices for all network infrastructure components.