CVE-2020-14199 describes a vulnerability in the Bitcoin protocol's BIP-143 implementation, specifically impacting Segwit transaction signing in all hardware wallets, including Trezor One and Model T devices. This flaw allows an attacker to trick a user into signing a transaction twice, potentially resulting in an unexpectedly high transaction fee. Rated Medium (CVSS 6.5), the vulnerability requires user interaction (UI:R) and could lead to high integrity impact (I:H) without affecting confidentiality or availability. While no active exploitation, public exploit code, or significant community discussion has been observed, affected Trezor devices were patched in firmware versions 1.9.1 and 2.3.1 respectively.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.3.1CPE matchmatch criteria | cpe:2.3:o:satoshilabs:trezor_model_t_firmware:*:*:*:*:*:*:*:* | ||
< 1.9.1CPE matchmatch criteria | cpe:2.3:o:satoshilabs:trezor_one_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.