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August 01, 2026, 01:56:10 PM *
News: COLDCARD users only: critical vulnerability risks funds stored on COLDCARD devices; immediate action required
 
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Author Topic: Critical vulnerability affecting COLDCARD users only  (Read 46 times)
theymos (OP)
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July 31, 2026, 09:07:56 AM
Last edit: July 31, 2026, 07:09:38 PM by theymos
Merited by NotATether (5), ABCbits (2), hosemary (2), Charles-Tim (1)
 #1
Any funds stored on COLDCARD Mk3/Mk2 are at high risk of being remotely stolen, and should be moved immediately. Mk4, Q, and Mk5 are also affected, with a bit less severity; though you should also take action on those devices ASAP. The vulnerability involved generating private keys in an insecure way.

This affects COLDCARD users only.

See:
https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/
https://bitcointalk.org/index.php?topic=5589927.0
1NXYoJ5xU91Jp83XfVMHwwTUyZFK64BoAD
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