CVE-2019-18672: Shapeshift Keepkey Firmware

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Insufficient checks in the finite state machine of the ShapeShift KeepKey hardware wallet before firmware 6.2.2 allow a partial reset of cryptographic secrets to known values via crafted messages. Notably, this breaks the security of U2F for new server registrations and invalidates existing registrations. This vulnerability can be exploited by unauthenticated attackers and the interface is reachable via WebUSB.

Affected products

• Shapeshift Keepkey Firmware: before 6.2.2 (fixed in 6.2.2)

Published 2019-12-06. Last modified 2026-06-17.