CVE-2012-1909: n/a vulnerability

CVE-2012-1909: The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 00:31 UTC (UTC+00:00)

Security readout for executives and security teams

Older Bitcoin node software could mishandle two transactions sharing the same identifier. A remote attacker could create a duplicate coinbase transaction and cause a denial-of-service condition where affected transaction outputs became unspendable. This matters mainly for legacy Bitcoin clients and services still running pre-0.4.4-era code. Exposure is likely limited to obsolete Bitcoin node or wallet software, forks retaining the old transaction-id behavior, or archived systems processing historical chains with legacy validation rules. Treat this as a legacy exposure issue, not a current internet-wide emergency. Prioritize remediation if the organization operates old Bitcoin infrastructure, maintains cryptocurrency forks, or relies on archived transaction validation systems. Mitigation focus: Upgrade any affected Bitcoin software beyond bitcoind 0.4.4-era code.; Review BIP 0030 and vendor guidance for duplicate transaction handling.; Check downstream forks for inherited pre-fix validation logic..

Prepared: Jun 27, 2026, 17:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 6, 2012, 16:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://en.bitcoin.it/wiki/BIP_0030CVE reference · x_refsource_CONFIRM
https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531CVE reference · x_refsource_CONFIRM
https://en.bitcoin.it/wiki/CVEsCVE reference · x_refsource_CONFIRM
https://bugs.gentoo.org/show_bug.cgi?id=407793CVE reference · x_refsource_CONFIRM
https://bitcointalk.org/index.php?topic=67738.0CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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