CVE-2012-1909
MEDIUM · CVSS 5.0EPSS 2.9%EU EUVD
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.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-16
- EPSS score
- 2.9% (87th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-1918)
- Published
- August 6, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-1918 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.
View on the EU Vulnerability DatabaseAffected products
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / bitcoin core
- bitcoin / wxbitcoin
References
- http://r6.ca/blog/20120206T005236Z.html
- http://sourceforge.net/mailarchive/forum.php?thread_name=CAPg%2BsBhmGHnMResVxPDZdfpmWTb9uqD0RrQD7oSXBQq7oHpm8g%40mail.gmail.com&forum_name=bitcoin-development
- https://bitcointalk.org/index.php?topic=67738.0
- https://bugs.gentoo.org/show_bug.cgi?id=407793
- https://en.bitcoin.it/wiki/BIP_0030(Vendor Advisory)
- https://en.bitcoin.it/wiki/CVEs(Vendor Advisory)
- https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531(Exploit, Patch)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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