{"id":"CVE-2012-1909","aliases":["EUVD-2012-1918","GHSA-77f9-3fqp-c88c"],"status":"published","title":"The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs...","description":"The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transactions with the same identifier, which allows remote attackers to cause a denial of service (unspendable transaction) by leveraging the ability to create a duplicate coinbase transaction.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02928,"percentile":0.87161,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-16"],"published":"2012-08-06T16:00:00Z","modified":"2026-06-16T23:40:32Z","products":[{"vendor":"bitcoin","product":"bitcoin_core"},{"vendor":"bitcoin","product":"wxbitcoin"}],"references":[{"url":"https://en.bitcoin.it/wiki/BIP_0030","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch"]},{"url":"http://sourceforge.net/mailarchive/forum.php?thread_name=CAPg%2BsBhmGHnMResVxPDZdfpmWTb9uqD0RrQD7oSXBQq7oHpm8g%40mail.gmail.com\u0026forum_name=bitcoin-development","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://en.bitcoin.it/wiki/CVEs","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://bugs.gentoo.org/show_bug.cgi?id=407793","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://bitcointalk.org/index.php?topic=67738.0","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://r6.ca/blog/20120206T005236Z.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-1909"},{"url":"https://github.com/advisories/GHSA-77f9-3fqp-c88c"}],"sources":{"cve":[{"id":"CVE-2012-1909","description":"The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transactions with the same identifier, which allows remote attackers to cause a denial of service (unspendable transaction) by leveraging the ability to create a duplicate coinbase transaction.","status":"published","published":"2012-08-06T16:00:00Z","modified":"2024-09-17T00:31:19.043Z","updated_at":"2026-11-02T14:34:51.937988Z"}],"euvd":[{"id":"EUVD-2012-1918","description":"The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transactions with the same identifier, which allows remote attackers to cause a denial of service (unspendable transaction) by leveraging the ability to create a duplicate coinbase transaction.","status":"published","published":"2012-08-06T16:00:00Z","modified":"2024-09-17T00:31:19Z","updated_at":"2026-11-03T00:28:58.42254Z"}],"ghsa":[{"id":"GHSA-77f9-3fqp-c88c","title":"The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs...","description":"The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transactions with the same identifier, which allows remote attackers to cause a denial of service (unspendable transaction) by leveraging the ability to create a duplicate coinbase transaction.","status":"published","published":"2022-05-13T01:27:55Z","modified":"2023-02-01T05:07:41Z","updated_at":"2026-11-02T14:50:35.618049Z"}],"nvd":[{"id":"CVE-2012-1909","description":"The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transactions with the same identifier, which allows remote attackers to cause a denial of service (unspendable transaction) by leveraging the ability to create a duplicate coinbase transaction.","status":"published","published":"2012-08-06T16:55:01.4Z","modified":"2026-06-16T23:40:32.433Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-16"],"updated_at":"2026-11-02T14:02:15.188652Z"}]}}