Low severity3.8NVD Advisory· Published May 2, 2023· Updated Jun 17, 2026
CVE-2023-27892
CVE-2023-27892
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.
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Affected products
3- ShapeShift/KeepKeydescription
- Range: <7.7.0
- Range: <7.7.0
Patches
Vulnerability mechanics
References
2- github.com/keepkey/keepkey-firmware/pull/337nvdPatch
- blog.inhq.net/posts/keepkey-CVE-2023-27892/nvdExploitThird Party Advisory
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