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Description

Ledger Live with vulnerable versions of ledgerhq/hw-app-eth prior to 6.34.7 contains an integer parsing vulnerability that allows attackers to manipulate EIP-712 typed data messages by exploiting incorrect hexadecimal field parsing when values contain an odd number of characters. Attackers can obtain signatures on truncated or misinterpreted message values to authorize unintended blockchain transactions, such as asset transfers at incorrect amounts.

PUBLISHED Reserved 2026-05-19 | Published 2026-05-19 | Updated 2026-05-20 | Assigner VulnCheck




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-704 Incorrect Type Conversion or Cast

Product status

Default status
unaffected

Any version before 6.34.7
affected

Default status
unaffected

Any version before 2.70.0
affected

Credits

Ian Fisher finder

VulnCheck coordinator

References

donjon.ledger.com/lsb/020/ (Ledger Security Bulletin 020) vendor-advisory

www.vulncheck.com/...-712-message-parsing-integer-truncation third-party-advisory

cve.org (CVE-2023-7345)

nvd.nist.gov (CVE-2023-7345)

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