What is CVE-2026-65058?

CVE-2026-65058 is a medium-severity vulnerability in Trezor Safe 3, classified under CWE-358. CVSS score: 5.3/10. Published 2026-07-21.

How severe is CVE-2026-65058?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Trezor Safe 3

CVE-2026-65058

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 t…

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Trezor Safe 3 — versions 0, 70c9b0c
Trezor Safe 5 — versions 0, 70c9b0c
Trezor Safe 7 — versions 0, 70c9b0c

Weakness classification (CWE)

CWE-358

References

9119a7d8-5eab-497f-8521-727c672e3725 (patch)
9119a7d8-5eab-497f-8521-727c672e3725 (vdb-entry)
9119a7d8-5eab-497f-8521-727c672e3725 (third-party-advisory)

Frequently asked questions

What is CVE-2026-65058?: CVE-2026-65058 is a medium-severity vulnerability in Trezor Safe 3, classified under CWE-358. CVSS score: 5.3/10. Published 2026-07-21.
How severe is CVE-2026-65058?: Medium severity. CVSS v3 base score is 5.3 out of 10.