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.
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Trezor_model_t_firmware | Satoshilabs | * | 2.3.1 (excluding) |