CVE-2005-0851

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2005-05-02 · updated 2026-06-16
Weakness: CWE-835

Description

FileZilla FTP server before 0.9.6, when using MODE Z (zlib compression), allows remote attackers to cause a denial of service (infinite loop) via certain file uploads or directory listings.

Affected products

FileZilla Server: before 0.9.6 — fixed in 0.9.6

How to fix

Upgrade to a fixed version: FileZilla Server 0.9.6. Check the vendor advisory for mitigations.

References

http://sourceforge.net/project/shownotes.php?group_id=21558&release_id=314473
http://www.securityfocus.com/bid/12865
http://sourceforge.net/project/shownotes.php?group_id=21558&release_id=314473
http://www.securityfocus.com/bid/12865

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