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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.78%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.78% probability · 56th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-354
- Affected
- shapeshift/keepkey firmware
- Source
- cve@mitre.org
EPSS 0.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.