CVE-2019-18671
9.8
CRITICAL · CVSS 3.1 · EPSS 3.3% (pctl 88)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
Insufficient checks in the USB packet handling of the ShapeShift KeepKey hardware wallet before firmware 6.2.2 allow out-of-bounds writes in the .bss segment via crafted messages. The vulnerability could allow code execution or other forms of impact. It can be triggered by unauthenticated attackers and the interface is reachable via WebUSB.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.27% — more likely to be exploited than 88% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2019-12-06 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| keepkey | keepkey |
| keepkey | keepkey firmware |
References
- https://blog.inhq.net/posts/keepkey-CVE-2019-18671/
- https://github.com/keepkey/keepkey-firmware/commit/b222c66cdd7c3203d917c80ba615082d309d80c3
- https://medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065
- https://medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3
- https://blog.inhq.net/posts/keepkey-CVE-2019-18671/
- https://github.com/keepkey/keepkey-firmware/commit/b222c66cdd7c3203d917c80ba615082d309d80c3
- https://medium.com/shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065
- https://medium.com/shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3
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