CVE-2012-1909 json
The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transa…
published 2012-08-06 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-1918
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.9%
- EPSS 2.9% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
2.93% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-16 Configuration
References
-
github.com
/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531
exploit, patch
-
en.bitcoin.it
/wiki/BIP_0030
vendor-advisory
-
en.bitcoin.it
/wiki/CVEs
vendor-advisory
-
sourceforge.net
/mailarchive/forum.php?thread_name=CAPg%2BsBhmGHnMResVxPDZdfpmWTb9uqD0RrQD7oSXBQq7oHpm8g%40mail.gmail.com&foru
mailing-list
- bugs.gentoo.org /show_bug.cgi?id=407793
- bitcointalk.org /index.php?topic=67738.0
- r6.ca /blog/20120206T005236Z.html
Sources
- CVE List CVE-2012-1909
- NVD CVE-2012-1909
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.