CVE

CVE-2005-0851

5.0

CVSS

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.

Attack Vector

Privileges Req.

User Interaction

Updated Nov 10, 2026View on NVD →

S4E scanner

mediumNetwork Vulnerabilities~10 seconds

FileZilla Server < 0.9.6 - DoS via MODE Z Infinite Loop

FileZilla Server versions prior to 0.9.6 are vulnerable to denial of service when using MODE Z (zlib compression). Remote attackers can cause an infinite loop via certain file uploads or directory listings, leading to server unresponsiveness. References: http://sourceforge.net/project/shownotes.php?group_id=21558&release_id=314473

9 assets checked · domain, subdomain, ipv4

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