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CVE-2019-18671

29
FAUCET Score

CVE-2019-18671 describes an out-of-bounds write vulnerability in the ShapeShift KeepKey hardware wallet firmware prior to version 6.2.2. This flaw, caused by insufficient checks in USB packet handling, allows unauthenticated attackers to trigger the vulnerability via crafted WebUSB messages. With a CVSS score of 9.8 (Critical), the vulnerability poses a significant risk, potentially leading to remote code execution, complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.2.2CPE matchmatch criteria
cpe:2.3:o:keepkey:keepkey_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.27%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0327 is in the 79th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

blog.inhq.net / posts/keepkey-CVE-2019-18671
github.com / keepkey/keepkey-firmware/commit/b222c66cdd7c3203d917c80ba615082d309d80c3
PatchThird Party Advisory
medium.com / shapeshift-stories/keepkey-release-notes-v-6f7d2ec78065
Release NotesThird Party Advisory
medium.com / shapeshift-stories/shapeshift-security-update-8ec89bb1b4e3
Third Party Advisory