CVE-2023-27892

LOW

Shapeshift Keepkey Firmware < 7.7.0 - Buffer Overflow

Title source: rule
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 3.8
EPSS 0.0015
EPSS Percentile 35.0%
Attack Vector PHYSICAL
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-125 CWE-120
Status published
Products (1)
shapeshift/keepkey_firmware 7.5.2 - 7.7.0
Published May 02, 2023
Tracked Since Feb 18, 2026