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CVE-2011-4447

18
FAUCET Score

CVE-2011-4447 describes a vulnerability in the "encrypt wallet" feature of wxBitcoin and bitcoind versions 0.4.x before 0.4.1, and 0.5.0rc. This flaw allows attackers to recover unencrypted private keys from Bitcoin wallet files by exploiting an improper interaction with the BSDDB deletion functionality, enabling them to read entries marked for deletion. The vulnerability has a CVSS score of 4.3 (medium severity), indicating a network-based attack with medium complexity, requiring no authentication, and resulting in a partial confidentiality impact. There is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
0.4.0CPE matchmatch criteria
cpe:2.3:a:bitcoin:bitcoin_core:0.4.0:*:*:*:*:*:*:*
0.4.1CPE matchmatch criteria
cpe:2.3:a:bitcoin:bitcoin_core:0.4.1:rc6:*:*:*:*:*:*
0.5.0CPE matchmatch criteria
cpe:2.3:a:bitcoin:bitcoin_core:0.5.0:rc:*:*:*:*:*:*
0.4.0CPE matchmatch criteria
cpe:2.3:a:bitcoin:wxbitcoin:0.4.0:*:*:*:*:*:*:*
0.4.1CPE matchmatch criteria
cpe:2.3:a:bitcoin:wxbitcoin:0.4.1:rc6:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 50th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bitcoin.org / releases/2011/11/21/v0.5.0.html
bitcointalk.org / index.php
bitcointalk.org / index.php
en.bitcoin.it / wiki/CVEs
Vendor Advisory