CVE-2019-18672

Name: CVE-2019-18672
Creator: NVD / NIST
Published: 2019-12-06T18:15:12.7+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2019-18672 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.78%

51.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-354

Affected Software

Vendor	Product	Versions
Shapeshift	Keepkey Firmware	< 6.2.2

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

Timeline

Published: Dec 6, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18672?

How severe is CVE-2019-18672?

CVE-2019-18672 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18672?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18672?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST