A side-channel vulnerability exists in the implementation of BIP-39 mnemonic processing, as observed in Trezor One v1.13.0 to v1.14.0, Trezor T v1.13.0 to v1.14.0, and Trezor Safe v1.13.0 to v1.14.0 hardware wallets. This originates from the BIP-39 standard guidelines, which induce non-constant time execution and specific branch patterns for word searching. An attacker with physical access during the initial setup phase can collect a single side-channel trace. By utilizing profiling-based Deep Learning Side-Channel Analysis (DL-SCA), the attacker can recover the mnemonic code and subsequently steal the assets. The issue was patched.
CVE-2025-69893
Score 4.6 from GitHub Security Advisory published 2026-04-14. NVD baseline CVSS 4.6; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.6
- EG Score
- 4.6(medium)
- EPSS
- 15.3%
- KEV
- Not listed
Published
April 14, 2026
Last Modified
July 5, 2026
Advisory Details (1)
Auto-updated Jul 10, 2026Fix side-channel in BIP-39 mnemonic processing when unlocked | Trezor
https://trezor.io/vulnerability/fix-side-channel-in-bip-39-mnemonic-processing-when-unlockedWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 40× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 114 total refreshes for this CVE.
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