Research / Finding
fix(core): fix bug in multisig verification.
F-TREZOR-FW-007-001
Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.
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Recorded evidence
—score not recorded
fix(core): fix bug in multisig verification.
merged
details
- Finding IDs
- F-TREZOR-FW-007-001
- Status
- merged
- Reported via
- security contact
- Note
- public fix commit ab9b4feaff30 on 2026-01-16. closes an ECDSA multisig verification loop flaw that could permit signature-acceptance bypass.
F-TREZOR-FW-007-001: Verification failures. Multisignature verification fails to enforce the intended signer requirements. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.
Mechanism source for F-TREZOR-FW-007-001
Security area (1seal assessment): Authorization. The corrected multisignature check enforces which signer combinations may authorize the operation. Reviewed 24 Sep 2026.
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