A security vulnerability has been detected in Tenda F456 1.0.0.5. This issue affects the function fromVirtualSer of the file /goform/VirtualSer of the component httpd. The manipulation of the argument menufacturer/Go leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.
The CVSS score for this vulnerability is 7.4, indicating a high severity level. The risk to organizations includes unauthorized access and potential system compromise, which could lead to significant operational disruptions.
Organizations should prioritize patching immediately. As the vulnerability is accessible over the network with low attack complexity and does not require user interaction, it poses a serious threat to security.
Given its exploit maturity being classified as proof of concept, defenders should be proactive in monitoring for any signs of exploitation attempts.
Vulnerability Details
The vulnerability described allows remote attackers to exploit the Tenda F456 device through a buffer overflow. This vulnerability is classified under CWE-119 and CWE-120, indicating issues related to improper handling of input and buffer errors.
The vulnerability was published on April 26, 2026, and affects all versions prior to vendor patch. The CVSS version 4.0 score is indicative of the high potential impact on confidentiality, integrity, and availability.
Technical Analysis
The root cause of this vulnerability stems from insufficient input validation on the affected function. Attackers may leverage this vulnerability by crafting malicious requests that exploit the buffer overflow, potentially leading to unauthorized code execution.
The attack vector for this vulnerability is network-based, allowing remote attackers to exploit the flaw without requiring physical access to the device or user interaction. The attack complexity is rated as low, making it easier for attackers to leverage this vulnerability.
Given that the vulnerability requires low privileges for exploitation and user interaction is not needed, the potential impact on confidentiality, integrity, and availability is significant.
Risk & Impact Analysis
Real-world deployment of Tenda F456 devices represents a substantial risk due to the accessibility of this vulnerability over the network. Organizations utilizing these devices should evaluate the potential blast radius of an exploit, which could include unauthorized access to sensitive data and control over the device.
The urgency for organizations to address this vulnerability is high, given the likelihood of exploitation and the potential for significant operational disruptions.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected by this vulnerability.
Mitigation & Remediation
Organizations should apply the latest vendor patches as soon as available. If a patch is not available, consider implementing network controls to restrict access to vulnerable devices and monitor for unusual activity.
For further guidance on securing your network, organizations can benefit from professional penetration testing services.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts, such as unusual patterns in network traffic or attempts to access the vulnerable endpoints.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-7055 lies in its demonstration of common vulnerabilities in consumer-grade hardware. Security teams should focus on improving input validation as a foundational practice to avoid similar vulnerabilities.
Organizations should also consider reviewing their security posture to include regular assessments and updates to defense mechanisms.
For more insights, organizations are encouraged to explore vulnerability management programs and penetration testing methodologies to enhance security posture.
Finally, organizations should keep abreast of emerging threats and adapt their security strategies accordingly.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)