How severe is CVE-2006-6564?

CVE-2006-6564 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2006-6564 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-6564?

CVE-2006-6564 affects Filezilla. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-6564?

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

When was CVE-2006-6564 published?

CVE-2006-6564 was published on 2006-12-15 and last updated on 2026-06-16.

CVE-2006-6564

CVE-2006-6564 is a medium-severity vulnerability in Filezilla with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Filezilla
Published: 2006-12-15
Last modified: 2026-06-16

Description

FileZilla Server before 0.9.22 allows remote attackers to cause a denial of service (crash) via a malformed argument to the STOR command, which results in a NULL pointer dereference. NOTE: CVE analysis suggests that the problem might be due to a malformed PORT command.

Frequently asked questions

What is CVE-2006-6564?: FileZilla Server before 0.9.22 allows remote attackers to cause a denial of service (crash) via a malformed argument to the STOR command, which results in a NULL pointer dereference. NOTE: CVE analysis suggests that the problem might be due to a malformed PORT command.
How severe is CVE-2006-6564?: CVE-2006-6564 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2006-6564 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6564?: CVE-2006-6564 affects Filezilla. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-6564?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-6564 published?: CVE-2006-6564 was published on 2006-12-15 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:filezilla:filezilla:*:*:*:*:*:*:*:*

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