CVE-2019-17391: Espressif ESP32-d0wd Firmware

Medium severity, CVSS 4.6. EPSS: 0.2% chance of exploitation in the next 30 days.

An issue was discovered in the Espressif ESP32 mask ROM code 2016-06-08 0 through 2. Lack of anti-glitch mitigations in the first stage bootloader of the ESP32 chip allows an attacker (with physical access to the device) to read the contents of read-protected eFuses, such as flash encryption and secure boot keys, by injecting a glitch into the power supply of the chip shortly after reset.

Affected products

• Espressif ESP32-d0wd Firmware: affected versions not specified
• Espressif ESP32-d2wd Firmware: affected versions not specified
• Espressif ESP32-Pico-d4 Firmware: affected versions not specified
• Espressif ESP32-s0wd Firmware: affected versions not specified

Published 2019-11-14. Last modified 2026-06-17.