CVE-2019-18672

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.

• CWE-354

• https://blog.inhq.net/posts/keepkey-CVE-2019-18672/
• https://github.com/keepkey/keepkey-firmware/commit/769714fcb569e7a4faff9530a2d9ac1f9d6e5680Patch, Third Party Advisory
• https://medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065Third Party Advisory
• https://medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3Third Party Advisory
• https://blog.inhq.net/posts/keepkey-CVE-2019-18672/
• https://github.com/keepkey/keepkey-firmware/commit/769714fcb569e7a4faff9530a2d9ac1f9d6e5680Patch, Third Party Advisory
• https://medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065Third Party Advisory
• https://medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3Third Party Advisory

Published

Dec 6, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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