Is CVE-2012-1909 in the CISA KEV catalog?

No. CVE-2012-1909 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-1909?

CVE-2012-1909 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2012-1909?

CVE-2012-1909 has an EPSS score of 2.93% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2012-1909?

No published fix for CVE-2012-1909 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2012-1909

MEDIUMEPSS 86th pctl

5.0

CVSS v2

NVD

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.

CWE-16

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.93%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

github.com

Vendor Advisory2

Other references4

Related Vulnerabilities

Other CWE-16 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-2335	Medium	5.0	85%	-	Fix
CVE-2004-2687	High	9.3	81%	-	Fix
CVE-2006-3677	High	7.5	78%	-	Fix
CVE-2011-4404	Medium	5.0	60%	-	-
CVE-2006-0848	Medium	5.1	58%	-	-
CVE-2007-3898	Medium	6.4	52%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.