CVE-2026-65058
Trezor Safe improper security check in on-device display
Description
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.
INFO
Published Date :
July 21, 2026, 9:16 p.m.
Last Modified :
July 22, 2026, 8:37 p.m.
Remotely Exploit :
Yes !
Source :
9119a7d8-5eab-497f-8521-727c672e3725
Affected Products
The following products are affected by CVE-2026-65058
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 9119a7d8-5eab-497f-8521-727c672e3725 | |||||
| CVSS 3.1 | MEDIUM | 9119a7d8-5eab-497f-8521-727c672e3725 | ||||
| CVSS 4.0 | MEDIUM | 9119a7d8-5eab-497f-8521-727c672e3725 |
Solution
- Update Trezor firmware to the latest version.
- Verify transaction details before signing.
- Ensure full calldata is reviewed.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-65058.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-65058 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-65058
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-65058 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-65058 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 9119a7d8-5eab-497f-8521-727c672e3725
Jul. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Trezor', 'product': 'Safe 3', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '70c9b0c', 'versionType': 'custom'}, {'status': 'unaffected', 'version': '70c9b0c'}], 'defaultStatus': 'unknown'}, {'vendor': 'Trezor', 'product': 'Safe 7', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '70c9b0c', 'versionType': 'custom'}, {'status': 'unaffected', 'version': '70c9b0c'}], 'defaultStatus': 'unknown'}, {'vendor': 'Trezor', 'product': 'Safe 5', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '70c9b0c', 'versionType': 'custom'}, {'status': 'unaffected', 'version': '70c9b0c'}], 'defaultStatus': 'unknown'}] Added SSVC {'id': 'CVE-2026-65058', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-30T18:42:58.833211Z'} Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Added CWE CWE-358 Added Reference https://github.com/trezor/trezor-firmware/commit/70c9b0c07748 Added Reference https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-202-02.json Added Reference https://www.cve.org/CVERecord?id=CVE-2026-65058