Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before…
Priority MEDIUM 59CWE-120Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0047 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:shapeshift:keepkey_firmware:*:*:*:*:*:*:*:* | 7.5.2 to before 7.7.0 | Vulnerable | Shapeshift |
| cpe:2.3:h:shapeshift:keepkey:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Shapeshift |
- cpe:2.3:o:shapeshift:keepkey_firmware:*:*:*:*:*:*:*:* Versions 7.5.2 to before 7.7.0 Vulnerable ·Shapeshift
- cpe:2.3:h:shapeshift:keepkey:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Shapeshift
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-27892
- 2026-10-03 Alias added: GHSA-76qj-23pr-3333
References
More Shapeshift Keepkey Firmware vulnerabilities
- TI-2021-11714 Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before… CVSS 3.1HIGH 8.8
- TI-2018-05022 Format String vulnerability in KeepKey version 4.0.0 allows attackers to trigger… CVSS 3.0HIGH 7.5
- TI-2019-13510 Insufficient checks in the finite state machine of the ShapeShift KeepKey hardware wallet… CVSS 3.1HIGH 7.5
- TI-2019-10699 On ShapeShift KeepKey devices, a side channel for the row-based OLED display was found. CVSS 3.0LOW 2.4
Sources
- CVE-2023-27892 · CVE Program
- CVE-2023-27892 · NVD
- FIRST EPSS
- GHSA-76qj-23pr-3333 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences