CVE-2012-1909

medium

Published 2012-08-06 · Modified 2026-04-29

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.0

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions
bitcoin	bitcoin_core
bitcoin	bitcoin_core	`0.3.4`
bitcoin	bitcoin_core	`0.3.5`
bitcoin	bitcoin_core	`0.3.8`
bitcoin	bitcoin_core	`0.3.10`
bitcoin	bitcoin_core	`0.3.11`
bitcoin	bitcoin_core	`0.3.12`
bitcoin	bitcoin_core	`0.4.0`
bitcoin	bitcoin_core	`0.4.1`
bitcoin	wxbitcoin

References

CWEs

CWE-16

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.