Unrated severityNVD Advisory· Published Aug 6, 2012· Updated Apr 29, 2026
CVE-2012-1909
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.
Affected products
12cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:*+ 10 more
- cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.3.10:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.3.11:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.3.12:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.3.8:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:0.4.1:rc6:*:*:*:*:*:*
- cpe:2.3:a:bitcoin:bitcoin_core:*:rc2:*:*:*:*:*:*range: <=0.4.4
- cpe:2.3:a:bitcoin:wxbitcoin:*:*:*:*:*:*:*:*
Patches
1a206b0ea12ebhttps://github.com/sipa/bitcoinvia nvd-ref
Vulnerability mechanics
Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
7- github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531nvdExploitPatch
- en.bitcoin.it/wiki/BIP_0030nvdVendor Advisory
- en.bitcoin.it/wiki/CVEsnvdVendor Advisory
- r6.ca/blog/20120206T005236Z.htmlnvd
- sourceforge.net/mailarchive/forum.phpnvd
- bitcointalk.org/index.phpnvd
- bugs.gentoo.org/show_bug.cginvd
News mentions
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