VULNERABILITY INTELLIGENCE

CVE-2023-27892

CVSS score3.8 LOW

EPSS probability0.47%

CISA KEVNot currently listed

Published2023-05-02

Last modified2026-06-17

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

Description

Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.7.0 allow a global buffer overflow via crafted messages. Flaws in cf_confirmExecTx() in ethereum_contracts.c can be used to reveal arbitrary microcontroller memory on the device screen or crash the device. With physical access to a PIN-unlocked device, attackers can extract the BIP39 mnemonic secret from the hardware wallet.

Weakness classification

nvd@nist.gov: CWE-125
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-120

Primary references

cve@mitre.org — Exploit, Third Party Advisory
cve@mitre.org — Patch
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch