How severe is CVE-2005-0851?

CVE-2005-0851 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2005-0851 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-0851?

CVE-2005-0851 affects Filezilla-project Filezilla Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-0851?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2005-0851 published?

CVE-2005-0851 was published on 2005-05-02 and last updated on 2026-06-16.

CVE-2005-0851

CVE-2005-0851 is a medium-severity vulnerability in Filezilla-project Filezilla Server with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Filezilla-project Filezilla Server
Published: 2005-05-02
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2005-0851?: 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.
How severe is CVE-2005-0851?: CVE-2005-0851 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2005-0851 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-0851?: CVE-2005-0851 affects Filezilla-project Filezilla Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-0851?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-0851 published?: CVE-2005-0851 was published on 2005-05-02 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:filezilla-project:filezilla_server:*:*:*:*:*:*:*:*

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