Description (CNA)
Trezor Safe 3, Safe 5, and Safe 7 firmware contains a confirmation-binding flaw in the Ethereum sign_tx / sign_tx_eip1559 flow. For contract interactions, the device confirms only the initial calldata chunk while the signature commits to the full streamed calldata. An attacker could present calldata to a victim then supply a different tail that changes the signed transaction. Fixed in 70c9b0c.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Trezor / Safe 3 | affected 0 before 70c9b0c; unaffected 70c9b0c |
| Trezor / Safe 7 | affected 0 before 70c9b0c; unaffected 70c9b0c |
| Trezor / Safe 5 | affected 0 before 70c9b0c; unaffected 70c9b0c |
CWE
CWE-358
References
- https://github.com/trezor/trezor-firmware/commit/70c9b0c07748
- https://www.cve.org/CVERecord?id=CVE-2026-65058
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-202-02.json
ADP enrichment
No English description supplied.
No references supplied.