CVE-2026-65058 (GCVE-0-2026-65058)

Vulnerability from cvelistv5 – Published: 2026-07-21 20:13 – Updated: 2026-07-21 20:13
VLAI
Title
Trezor Safe improper security check in on-device display
Summary
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.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
5.9 (Medium)
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
CWE
  • CWE-358 - Improperly Implemented Security Check for Standard
Assigner
References
Impacted products
Vendor Product Version
Trezor Safe 3 Affected: 0 , < 70c9b0c (custom)
Unaffected: 70c9b0c
Create a notification for this product.
Trezor Safe 7 Affected: 0 , < 70c9b0c (custom)
Unaffected: 70c9b0c
Create a notification for this product.
Trezor Safe 5 Affected: 0 , < 70c9b0c (custom)
Unaffected: 70c9b0c
Create a notification for this product.
Date Public
2026-03-19 00:00
Credits
Oleh Konko, 1seal
Show details on NVD website
To clipboard 

{
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          "product": "Safe 3",
          "vendor": "Trezor",
          "versions": [
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            }
          ]
        },
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        }
      ],
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            "confidentialityImpact": "NONE",
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            "subConfidentialityImpact": "NONE",
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            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
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        {
          "other": {
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              "options": [
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                },
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                }
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              "role": "CISA Coordinator",
              "timestamp": "2026-06-30T18:42:58.833211Z",
              "version": "2.0.3"
            },
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      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-358",
              "description": "CWE-358 Improperly Implemented Security Check for Standard",
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        "shortName": "cisa-cg"
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          "url": "https://github.com/trezor/trezor-firmware/commit/70c9b0c07748"
        },
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          "name": "url",
          "tags": [
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          ],
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-65058"
        },
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          "name": "url",
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        }
      ],
      "title": "Trezor Safe improper security check in on-device display"
    }
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  "cveMetadata": {
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    "cveId": "CVE-2026-65058",
    "datePublished": "2026-07-21T20:13:00.560Z",
    "dateReserved": "2026-07-21T14:35:48.323Z",
    "dateUpdated": "2026-07-21T20:13:00.560Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.