A vulnerability was found in Tenda AC8V4 V16.03.34.06. This vulnerability allows manipulation of the argument wpapsk_crypto within the function SUB_0046AC38 located in the file /goform/WifiExtraSet, leading to a stack-based buffer overflow. With a CVSS score of 9.8, this is classified as a critical vulnerability with severe implications. As it stands, the attack vector is network-based, and the complexity is low, allowing attackers to exploit it without needing prior privileges or user interaction.
Risk to organizations includes potential unauthorized access to sensitive data, integrity compromise of the device, and availability issues due to potential crashes. Given the critical nature of this vulnerability, organizations should prioritize patching immediately.
As of now, there is no public exploit confirmed for this vulnerability, and it has not been included in the Known Exploited Vulnerabilities (KEV) catalog. However, the potential impact of an exploitation event makes it imperative for organizations to act swiftly.
Organizations should assess their exposure to this vulnerability and implement necessary remediation steps as soon as possible.
Vulnerability Details
The official CVE description states that a vulnerability was found in Tenda AC8V4 V16.03.34.06, specifically in the function SUB_0046AC38 of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow. The vulnerability has a CVSS score of 9.8, indicating a critical severity level. Affected products include Tenda AC8 firmware version 16.03.34.06, published on February 20, 2025.
The Common Weakness Enumeration (CWE) classification for this vulnerability includes CWE-787 (Out-of-bounds Write) and CWE-120 (Buffer Copy without Checking Size of Input).
Technical Analysis
The root cause of this vulnerability stems from improper handling of input in the function SUB_0046AC38, which leads to a stack-based buffer overflow. Attackers may leverage this vulnerability by sending crafted packets that manipulate the wpapsk_crypto argument, leading to overwriting critical areas of memory.
The attack vector is categorized as network-based (AV:N), which means that attackers can initiate the attack remotely without physical access to the device. The attack complexity is classified as low (AC:L), indicating that the exploit can be executed without advanced skills. No privileges are required to exploit this vulnerability (PR:N), and user interaction is also not needed (UI:N).
The impact of exploiting this vulnerability includes high confidentiality (C:H), integrity (I:H), and availability (A:H) impacts, indicating that attackers can potentially gain access to sensitive data, alter device functionality, and disrupt service.
Risk & Impact Analysis
Real-world deployment risk for organizations utilizing Tenda AC8V4 firmware is significant due to the potential for exploitation over a network. The critical nature of the vulnerability coupled with the low attack complexity presents a considerable risk of unauthorized access. Organizations should assess the blast radius potential, as successful exploitation could lead to widespread data breaches and disruption of services.
Urgency assessment based on the CVSS score indicates that organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version of the Tenda AC8 firmware is 16.03.34.06. All versions prior to vendor patch are vulnerable.
Mitigation & Remediation
Organizations should immediately apply the available patches to remediate this vulnerability. Updating to the latest firmware version from Tenda is essential to ensure protection against potential exploits. If a patch is not available, implementing network controls to restrict access to the affected device and monitoring for unusual activity are critical.
For further guidance on securing devices, organizations can refer to best practices in penetration testing and continuous monitoring.
Detection Guidance
Organizations should monitor system logs for unusual activity, particularly in the affected file path /goform/WifiExtraSet. Behavioral anomalies such as unexpected restarts or unauthorized access attempts should be investigated promptly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-25663 highlights the importance of robust input validation and error handling in firmware development. This incident underscores a pattern of vulnerabilities that can arise from inadequate security measures during the software design process.
Security teams should learn from this vulnerability to improve their defensive strategies, focusing on reducing the attack surface and implementing proactive security testing methodologies. This incident demonstrates the necessity for a comprehensive approach to security that encompasses both development and ongoing maintenance.
For additional resources on improving security posture, organizations may want to explore penetration testing methodology and other security best practices available.
Additionally, organizations can benefit from engaging in vulnerability management programs to ensure ongoing assessment and remediation of potential security issues.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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