Unrated severityNVD Advisory· Published Dec 10, 2025· Updated Dec 11, 2025

CVE-2025-65821

Description

As UART download mode is still enabled on the ESP32 chip on which the firmware runs, an adversary can dump the flash from the device and retrieve sensitive information such as details about the current and previous Wi-Fi network from the NVS partition. Additionally, this allows the adversary to reflash the device with their own firmware which may contain malicious modifications.

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Affected products

Espressif/ESP32llm-create

Patches

Vulnerability mechanics

References

gist.github.com/dead1nfluence/4dffc239b4a460f41a03345fd8e5feb5mitre
github.com/dead1nfluence/Meatmeet-Pro-Vulnerabilities/blob/main/Device/UART-Download-Mode-Enabled.mdmitre

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