CVE-2019-18673: Shiftcrypto BITBOX02

Medium severity, CVSS 4.6. EPSS: 0.4% chance of exploitation in the next 30 days.

On SHIFT BitBox02 devices, a side channel for the row-based OLED display was found. The power consumption of each row-based display cycle depends on the number of illuminated pixels, allowing a partial recovery of display contents. For example, a hardware implant in the USB cable might be able to leverage this behavior to recover confidential secrets such as the PIN and BIP39 mnemonic. Note: BIP39 secrets are not displayed by default on this device. The side channel is relevant only if the attacker has enough control over the device's USB connection to make power-consumption measurements at a time when secret data is displayed. The side channel is not relevant in other circumstances, such as a stolen device that is not currently displaying secret data.

Affected products

• Shiftcrypto BITBOX02: affected versions not specified

Published 2019-11-02. Last modified 2026-06-17.