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CVE-2025-25676: Critical Vulnerability in Tenda i12 Firmware

A critical buffer overflow vulnerability has been identified in Tenda i12 firmware version 1.0.0.10(3805). Immediate action is required to mitigate the risk of exploitation.

CRITICALCVSS 9.8 · Published February 20, 2025

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Tenda i12 firmware version 1.0.0.10(3805) has been discovered to contain a critical buffer overflow vulnerability. This vulnerability allows attackers to exploit the system through the list parameter in the formwrlSSIDset function. With a CVSS score of 9.8, this vulnerability falls under the critical severity category, warranting immediate attention from organizations utilizing this firmware.

Risk to organizations includes potential unauthorized access, data compromise, and service disruptions. Given the attack vector is network-based and the complexity is low, organizations should prioritize patching immediately to safeguard their systems from possible exploitation.

As of now, there are no public exploits or proof-of-concept available for this vulnerability, but the critical nature of its score indicates that it should not be overlooked. Organizations must remain vigilant in monitoring their systems for any signs of this vulnerability being targeted.

To mitigate risks associated with this vulnerability, organizations need to implement necessary patches and updates as soon as they are available. The urgency of this situation cannot be overstated, as the consequences of ignoring such vulnerabilities can be severe.

Vulnerability Details

The CVE-2025-25676 vulnerability is characterized by a buffer overflow that can be triggered remotely. Specifically, it arises from improper validation of input data within the affected firmware's function, leading to potential arbitrary code execution. The CVSS score of 9.8 indicates a critical impact on confidentiality, integrity, and availability.

Tenda is the vendor associated with this vulnerability, specifically impacting their i12 firmware product. This vulnerability was published on February 20, 2025, and is classified under CWE-120.

Technical Analysis

The root cause of this vulnerability is attributed to a failure in input validation, allowing for a buffer overflow through the list parameter in the formwrlSSIDset function. The attack vector is network-based, requiring no privileges or user interaction, making it a low-complexity exploit.

The potential impacts of this vulnerability are severe, affecting confidentiality, integrity, and availability. Attackers may leverage this vulnerability to execute arbitrary code, leading to complete system compromise.

Risk & Impact Analysis

Real-world deployment risk is significant, as organizations using the Tenda i12 firmware may find themselves exposed to active threats. The potential blast radius is considerable, given that network-based attacks can target multiple devices simultaneously.

Organizations must be aware that the longer they delay in addressing this vulnerability, the greater the risk of exploitation. The urgency for patching is critical, and organizations should prioritize it in their patch management cycles.

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

This vulnerability affects Tenda i12 firmware version 1.0.0.10(3805). Organizations should ensure that all devices running this version are updated to the latest patched version once available.

Mitigation & Remediation

To mitigate this vulnerability, organizations should immediately check for available updates from Tenda and apply any patches as soon as they are released. Configuration hardening and implementing network controls can also help reduce exposure.

For a comprehensive approach to security, organizations may consider utilizing penetration testing to identify similar vulnerabilities in their systems.

Detection Guidance

Organizations should monitor logs for any unusual activity and behavioral anomalies that may indicate an attempted exploitation of this vulnerability. Network signatures and system changes should also be monitored.

AppSecure Threat Intelligence Insight

The significance of CVE-2025-25676 extends beyond immediate risk; it highlights the ongoing challenges in maintaining secure firmware across consumer devices. Organizations must stay informed about emerging vulnerabilities and adopt a proactive security posture.

In light of this, security teams should regularly evaluate their vulnerability management program to ensure they are equipped to address such vulnerabilities promptly.

Furthermore, leveraging resources such as penetration testing methodology can provide valuable insights and enhance security measures.

Lastly, organizations should consider the lessons learned from vulnerabilities like CVE-2025-25676 to foster a culture of security awareness and continuous improvement.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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