Medium severity6.5NVD Advisory· Published Jun 16, 2020· Updated Jun 17, 2026
CVE-2020-14199
CVE-2020-14199
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.
Affected products
4- cpe:2.3:o:satoshilabs:trezor_model_t_firmware:*:*:*:*:*:*:*:*Range: <2.3.1
- cpe:2.3:o:satoshilabs:trezor_one_firmware:*:*:*:*:*:*:*:*Range: <1.9.1
- Bitcoin/Bitcoin protocoldescription
- Range: before 1.9.1
Patches
Vulnerability mechanics
References
1News mentions
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