{"id":"CVE-2023-27892","aliases":["EUVD-2023-31626","GHSA-76qj-23pr-3333"],"status":"published","title":"Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.7.0 allow...","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.","severity":{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0047,"percentile":0.40912,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-125"],"published":"2023-05-02T00:00:00Z","modified":"2026-10-28T02:30:47Z","products":[{"vendor":"shapeshift","product":"keepkey_firmware"}],"references":[{"url":"https://github.com/keepkey/keepkey-firmware/pull/337","tags":["x_transferred","Patch","fix"]},{"url":"https://blog.inhq.net/posts/keepkey-CVE-2023-27892/","tags":["x_transferred","Exploit","Third Party Advisory","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27892","tags":["advisory"]},{"url":"https://blog.inhq.net/posts/keepkey-CVE-2023-27892"},{"url":"https://github.com/advisories/GHSA-76qj-23pr-3333"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/27xxx/CVE-2023-27892.json","tags":["advisory"]}],"sources":{"cve":[{"id":"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.","status":"published","published":"2023-05-02T00:00:00Z","modified":"2025-01-30T16:42:38.016Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N","level":"low","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:26.63732Z"}],"euvd":[{"id":"EUVD-2023-31626","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.","status":"published","published":"2023-05-02T00:00:00Z","modified":"2025-01-30T16:42:38Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N","level":"low"}],"updated_at":"2026-11-03T00:04:09.009549Z"}],"ghsa":[{"id":"GHSA-76qj-23pr-3333","title":"Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.7.0 allow...","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.","status":"published","published":"2023-05-02T21:31:49Z","modified":"2025-01-30T18:33:11Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"low"}],"cwes":["CWE-120","CWE-125"],"updated_at":"2026-11-02T14:59:43.882222Z"}],"nvd":[{"id":"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.","status":"published","published":"2023-05-02T21:15:09.337Z","modified":"2026-06-17T05:46:02.583Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-125","CWE-120"],"updated_at":"2026-11-02T14:07:59.151142Z"}],"osv":[{"id":"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.","status":"published","published":"2023-05-02T00:00:00Z","modified":"2026-10-28T02:30:47.764086383Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N","level":"low"}],"updated_at":"2026-11-02T15:44:31.135751Z"}]}}