CVE-2023-27892
low-risk
Published 2023-05-02
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.
Do I need to act?
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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.8/10
Low
PHYSICAL
/ HIGH complexity
Affected Products (1)
Keepkey Firmware
Affected Vendors
15
/ 100
low-risk
Severity
10/34 · Low
Exploitability
0/34 · Minimal
Exposure
5/34 · Minimal