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CVE-2009-4593

15
FAUCET Score

CVE-2009-4593 describes a denial-of-service vulnerability in Bftpd versions prior to 2.4, specifically within the bftpdutmp_log function. This flaw, caused by a missing null terminator in the ut.bu_host structure member, could allow unauthenticated remote attackers to crash the daemon. With a CVSS score of 5.0, it is considered a medium-severity issue with low attack complexity and no known public exploits or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3CPE matchmatch criteria
cpe:2.3:a:jesse_smith:bftpd:*:*:*:*:*:*:*:*
1.6CPE matchmatch criteria
cpe:2.3:a:jesse_smith:bftpd:1.6:*:*:*:*:*:*:*
1.7CPE matchmatch criteria
cpe:2.3:a:jesse_smith:bftpd:1.7:*:*:*:*:*:*:*
1.7.2CPE matchmatch criteria
cpe:2.3:a:jesse_smith:bftpd:1.7.2:*:*:*:*:*:*:*
1.8CPE matchmatch criteria
cpe:2.3:a:jesse_smith:bftpd:1.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.44%
Probability of exploitation in next 30 days
EPSS Percentile
70.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0144 is in the 53rd percentile among its peer group of 23,701 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

bftpd.sourceforge.net / downloads/CHANGELOG
bftpd.sourceforge.net / news.html
Patch
secunia.com / advisories/37185
Vendor Advisory
securityfocus.com / bid/36820
Patch
vupen.com / english/advisories/2009/3032
PatchVendor Advisory