Trezor Safe improper security check in on-device display
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.9epss 0.3%
from disclosure to weapon16 days
Published on NVDJul 21
1st PoC+16d
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
public PoCs found — 1
githubgithub.com/iktok90-design/trezor-cve-2026-65058★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.