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CVE-2005-0851

26
FAUCET Score

CVE-2005-0851 describes a denial-of-service vulnerability affecting FileZilla FTP server versions prior to 0.9.6. This flaw allows remote attackers to trigger an infinite loop by exploiting the MODE Z (zlib compression) feature during file uploads or directory listings. The vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited remotely with low attack complexity, leading to a partial availability impact. While there is a Nuclei template available for detection, there is no evidence of active exploitation, Metasploit modules, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.6CPE matchmatch criteria
cpe:2.3:a:filezilla-project:filezilla_server:*:*:*:*:*:*:*:*

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
2.19%
Probability of exploitation in next 30 days
EPSS Percentile
80.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Nuclei: CVE-2005-0851 · Oct 2, 2025
This CVE's current EPSS score of 0.0219 is in the 70th percentile among its peer group of 23,701 CVEs.

Social Chatter

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

sourceforge.net / project/shownotes.php
ProductThird Party Advisory
securityfocus.com / bid/12865
PatchThird Party AdvisoryVDB Entry