This vulnerability exists in Tenda wireless routers (300Mbps Wireless Router F3 and N300 Easy Setup Router) due to the plaintext transmission of login credentials during the initial login or post-factory reset setup through the web-based administrative interface. An attacker on the same network could exploit this vulnerability by intercepting network traffic and capturing the credentials transmitted in plaintext.
Successful exploitation of this vulnerability could allow the attacker to obtain sensitive information and gain unauthorized access to the targeted device. With a CVSS score of 8.7, this vulnerability is classified as high severity, indicating a significant risk to organizations using these devices.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability. The potential for unauthorized access to sensitive information on the network is a critical concern, and swift action is necessary.
This vulnerability has been classified under CWE-319, which relates to the improper restriction of operations within the bounds of a memory buffer. Understanding the implications of this vulnerability is essential for effective risk management and mitigation.
The vulnerability was published on January 9, 2026, and remains in a deferred status. Organizations should stay informed about updates regarding this issue to ensure that their devices are secure.
Vulnerability Details
The vulnerability allows the plaintext transmission of login credentials within Tenda wireless routers. It has a CVSS score of 8.7, indicating a high severity level. The affected products include the 300Mbps Wireless Router F3 and N300 Easy Setup Router. The vulnerability was published on January 9, 2026, and is classified under CWE-319.
Technical Analysis
The root cause of this vulnerability is the insecure transmission of login credentials. The attack vector is adjacent network access, meaning that an attacker must be on the same network to exploit it. The attack complexity is low since no special conditions are required for exploitation.
No privileges are required to exploit this vulnerability, and user interaction is not necessary. The impacts on confidentiality, integrity, and availability are all high, indicating that the exploitation can severely compromise the device.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is significant, especially in environments where Tenda routers are used. Given the high severity of this vulnerability, organizations must consider the potential for unauthorized access and data breaches.
The urgency for remediation is high, and organizations should address this vulnerability in their priority patch cycle. The potential blast radius includes any devices connected to the same network as the vulnerable routers, which could lead to extensive data breaches.
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. Tenda has not specified particular version ranges, but users of the 300Mbps Wireless Router F3 and N300 Easy Setup Router should apply updates as they become available.
Mitigation & Remediation
Organizations should monitor for firmware updates from Tenda and apply patches immediately. If a patch is not yet available, consider implementing network segmentation to limit access to the devices and prevent unauthorized interception of credentials. Additionally, utilizing secure protocols for device management can help mitigate this risk.
For further assistance with security assessments and vulnerability management, organizations may consider engaging with our penetration testing services to validate the security posture of their networks.
Detection Guidance
Organizations should monitor network traffic for unusual patterns that may indicate credential interception. Logging access attempts to the administrative interface can help identify unauthorized access attempts.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its exploitation potential within adjacent networks. Organizations should recognize the patterns of insecure credential transmission and build strategies to prevent similar vulnerabilities in future device deployments.
Security teams are encouraged to conduct comprehensive vulnerability assessments regularly to identify and mitigate risks proactively. This incident serves as a reminder of the importance of securing device management interfaces.
For additional insights into vulnerability management, organizations can refer to our vulnerability management program guide, which offers strategies for identifying and addressing potential security flaws.
Additionally, understanding the latest trends in cybersecurity can enhance organizational defenses, which can be explored in our 2025 vulnerability exposure severity trends article.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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