Vulnerability in Satoshilabs Trezor Model T
CVE-2020-14199
BIP-143 in the Bitcoin protocol specification mishandles the signing of a Segwit transaction, which allows attackers to trick a user into making two signatures in certain cases, potentially leading to a huge transaction fee. NOTE: this affects all hardware wallets. It was fixed in 1.9.1 for the Trezor One and 2.3.1 for the Trezor Model T.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (56.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- blog.trezor.io/details-of-firmware-updates-for-trezor-one-version-1-9-1-and-tre… (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-14199?
- CVE-2020-14199 is a medium-severity vulnerability in Satoshilabs Trezor Model T, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.5/10. Published 2020-06-16.
- How severe is CVE-2020-14199?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-14199 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.