A weakness has been identified in Tenda F456 1.0.0.5. This vulnerability affects the function fromPptpUserAdd of the file /goform/PPTPDClient of the component httpd. Executing a manipulation of the argument opttype/usernamewith can lead to buffer overflow. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.
The severity of this vulnerability is classified as high, with a CVSS score of 7.4. This indicates significant risk to systems utilizing the affected component. Organizations need to be aware of the potential for unauthorized access and data compromise.
The implications of this vulnerability are substantial. Attackers may leverage this weakness to execute arbitrary code, potentially leading to system compromise and data breaches. Organizations should prioritize patching immediately.
As of now, there are no public exploits confirmed for this vulnerability, and it has not yet been listed in the Known Exploited Vulnerabilities (KEV) catalog. However, the availability of a public exploit raises concern for potential exploitation in the wild.
Given the nature of this vulnerability, organizations should address it in their priority patch cycle to mitigate potential risks.
Vulnerability Details
CVE-2026-7054 is a high-severity vulnerability affecting Tenda F456 1.0.0.5. The official description states that the vulnerability allows for a buffer overflow due to improper handling of user input. The CVSS score is 7.4, indicating a high severity level. The vulnerability was published on April 26, 2026.
This vulnerability is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-120 (Buffer Copy without Checking Size of Input).
Technical Analysis
The root cause of this vulnerability lies in improper input validation in the function fromPptpUserAdd. The attack vector is network-based, allowing remote exploitation without the need for physical access. The attack complexity is low, and the privileges required to exploit this vulnerability are also low.
No user interaction is required for exploitation. The confidentiality, integrity, and availability impacts are all rated high, indicating that a successful attack could compromise sensitive data and disrupt services.
Risk & Impact Analysis
Risk to organizations includes the potential for data breaches and unauthorized access to sensitive information. The blast radius for this vulnerability is significant, as it affects remote access functionalities. Organizations that deploy Tenda F456 devices need to understand the urgency of addressing this vulnerability based on the CVSS score of 7.4.
Given the current threat landscape, organizations should prioritize patching immediately to prevent potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected.
Mitigation & Remediation
Organizations should ensure they are running the latest version of Tenda F456 and apply patches as soon as they become available. Configuration hardening should also be implemented to mitigate risks associated with this vulnerability. Additionally, organizations may consider engaging in penetration testing to identify any unaddressed security weaknesses.
Detection Guidance
Monitoring for unusual network traffic patterns and unexpected service interruptions can help identify potential exploitation attempts. Organizations should also review logs for any anomalies related to the PPTPDClient component.
AppSecure Threat Intelligence Insight
This vulnerability underscores the importance of proactive vulnerability management and the need for organizations to stay informed about emerging threats. Security teams should regularly review their security posture and engage in continuous security testing to safeguard against vulnerabilities like CVE-2026-7054.
For organizations using cloud infrastructure, adopting a comprehensive security strategy is essential. Consider reviewing the cloud penetration testing guide to enhance your security measures against potential vulnerabilities.
Security teams should also ensure they are up to date with the latest security practices and continuously train their staff on identifying and responding to vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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