COLDCARD vulnerability what happened, and what to do
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Mk3 v4.2.0 availability update

coldcard-mk3-hotfix-update

https://x.com/COLDCARDwallet/status/2083186689246208474

Author
@COLDCARDwallet
Organisation
Coinkite
Evidence role
vendor-update
Posted
31 Jul 2026, 13:43 UTC
Capture status
capture held
Artefacts held
2

Official COLDCARD announcement of the Mk3 v4.2.0 hotfix, useful for bounding the public remediation timeline.

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