A vulnerability was detected in Tenda F456 firmware version 1.0.0.5. This vulnerability allows the manipulation of the argument page within the function fromSafeUrlFilter of the file /goform/SafeUrlFilter, which leads to a buffer overflow. Attackers may exploit this vulnerability remotely. The exploit is now public and may be used, which increases the urgency for organizations to address this issue.
With a CVSS score of 7.4, this vulnerability is classified as high severity. This means that organizations must take it seriously, as the potential risk to systems and data is significant. The attack vector is network-based, and the complexity is low, indicating that attackers can exploit the vulnerability without needing extensive knowledge or resources.
Risk to organizations includes unauthorized access and potential data breaches, making it essential for defenders to prioritize patching immediately. Organizations should distribute necessary patches as soon as they become available to mitigate the threat posed by this vulnerability.
Currently, there are no public exploits confirmed for this vulnerability. However, the fact that the exploit is now public raises concerns about its potential use in the wild. Therefore, organizations should monitor their systems and prepare for possible attacks leveraging this vulnerability.
In summary, due to the significant risks associated with CVE-2026-7056, it is crucial that organizations act swiftly to address this vulnerability and implement necessary security measures to protect their systems.
Vulnerability Details
The vulnerability description indicates that it affects Tenda F456 firmware version 1.0.0.5. The specific vulnerability is a buffer overflow caused by improper handling of user input in the fromSafeUrlFilter function. The CVSS score is 7.4, indicating a high severity level, and it is classified under CWE-119 and CWE-120.
The vulnerability was published on April 26, 2026, and is currently marked as received with no confirmed public exploit available. However, due to the nature of the vulnerability and the fact that it is exploitable remotely, organizations should take immediate action.
Technical Analysis
The root cause of this vulnerability is a buffer overflow that occurs when the argument page is manipulated. This can happen remotely, allowing attackers to exploit the vulnerability without any user interaction required. The attack complexity is low, making it easy for attackers to carry out the attack.
Privileged access is required, but the user interaction is not necessary. The impacts include high confidentiality, integrity, and availability, making this vulnerability particularly dangerous.
Risk & Impact Analysis
The real-world deployment of this vulnerability poses significant risks to organizations. The potential for unauthorized access and data breaches is high, especially considering the exploit is now public. Organizations using Tenda F456 firmware need to assess their risk and take immediate action to patch or mitigate the vulnerability.
The urgency for addressing this vulnerability is high due to its classification and the potential impact on organizational operations. Organizations should prioritize remediation efforts to protect their systems from potential exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects Tenda F456 firmware version 1.0.0.5. Organizations using this version should take immediate action to remediate the vulnerability.
Mitigation & Remediation
Organizations should prioritize patching immediately. To mitigate the risk, they should upgrade to the latest version of Tenda firmware as soon as it is released. If a patch is not available, organizations should consider implementing network controls to limit exposure to this vulnerability.
Additionally, organizations may want to implement monitoring solutions that can detect any unusual activity or attempts to exploit this vulnerability. Regular security assessments, such as penetration testing, can also help identify and address vulnerabilities proactively.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts. This includes unusual requests to the /goform/SafeUrlFilter endpoint or patterns consistent with buffer overflow attacks. Behavioral anomalies such as unexpected crashes or performance degradation in the Tenda F456 device can also indicate that the vulnerability is being exploited.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-7056 is its representation of the ongoing challenges faced by IoT devices in maintaining security. As vulnerabilities like this become public, they can serve as indicators for broader trends in security risks associated with consumer devices. Organizations must remain vigilant and adaptable, learning from such vulnerabilities to enhance their security posture.
The lessons learned from this vulnerability highlight the need for regular updates and proactive security measures in the IoT space. Organizations should not only focus on immediate patching but also on developing robust security policies that anticipate future risks.
For more information on securing your IoT devices, organizations can refer to our various resources on cloud security and penetration testing methodologies to enhance their defenses.
In conclusion, it is essential for organizations operating Tenda F456 devices to prioritize their security and take immediate action to address this high-severity vulnerability.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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