Yealink UVC40 E2 Wi-Fi Credential Theft and Privilege Escalation

Executive Summary

This vulnerability affects Yealink UVC40 E2 devices running firmware before version 319.410.0.71. An attacker with brief physical access can extract Wi-Fi credentials via the USB port. The firmware configuration contains sensitive data that may be exploited to gain root access on the device. Additionally, within Wi-Fi range, the attacker could intercept audio and video without triggering the device's LED indicator.

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Impact Analysis

If you use a vulnerable Yealink UVC40 E2 device, an attacker could steal your Wi-Fi network credentials, allowing unauthorized network access. They could also gain full control over the device, enabling audio and video surveillance without your knowledge. This poses serious privacy and security risks for both personal and professional environments.

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Compliance Impact

This vulnerability could lead to non-compliance with GDPR due to unauthorized data access and surveillance risks. For HIPAA, it may violate patient privacy protections if the device is used in healthcare settings. Organizations must address this flaw to maintain regulatory compliance and protect sensitive data.

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Mitigation Strategies

Update Yealink UVC40 E2 devices to firmware version 319.410.0.71 or later to address the vulnerability.

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