[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"focus:coldcard-wallet-rng-flaw-likely-linked-to-88-million-bitcoin-theft-msehtgbh":3},{"item":4},{"id":5,"title":6,"slug":7,"summary":8,"severity":9,"category":10,"cve_ids":11,"affected_products":12,"action_required":18,"article_ids":19,"ioc_summary":21,"source_urls":22,"status":24,"expires_at":25,"created_at":26,"updated_at":27,"articles":28},"80be89b6-7c2f-4749-ac46-3a74abb63f9d","COLDCARD wallet RNG flaw likely linked to $88 million Bitcoin theft","coldcard-wallet-rng-flaw-likely-linked-to-88-million-bitcoin-theft-msehtgbh","COLDCARD hardware wallet firmware contained an RNG integration flaw that caused wallets to use predictable software-based key generation instead of hardware randomization. Attackers exploited this to reconstruct wallet seeds offline and steal approximately $88.6 million in Bitcoin from affected users. Any organization or individual using COLDCARD wallets is at risk of fund theft if they generated keys during the vulnerable firmware window.","critical","advisory",[],[13,14,15,16,17],"COLDCARD","Mk2","Mk3","Mk4","Mk5","Immediately identify any COLDCARD wallet usage in your environment or customer base. Cross-reference with COLDCARD's published list of affected firmware versions and advise users to migrate funds to new wallets generated with patched firmware or alternative hardware.",[20],"f7741958-2544-4695-a08c-eaea3dacc795",null,[23],"https:\u002F\u002Fwww.bleepingcomputer.com\u002Fnews\u002Fsecurity\u002Fcoldcard-wallet-rng-flaw-likely-linked-to-88-million-bitcoin-theft\u002F","archived","2026-08-06T10:06:03.261+00:00","2026-08-04T10:06:09.691308+00:00","2026-08-06T10:06:31.474206+00:00",[29],{"id":20,"title":6,"url":23}]