VULNERABILITY INTELLIGENCE

CVE-2020-14199

CVSS score6.5 MEDIUM
EPSS probability0.86%
CISA KEVNot currently listed
Published2020-06-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-347

Primary references