CVE-2006-2173

CVE-2006-2173 is a medium-severity vulnerability in Filezilla Filezilla Server with a CVSS 2.0 base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Buffer overflow in FileZilla FTP Server 2.2.22 allows remote authenticated attackers to cause a denial of service and possibly execute arbitrary code via a long (1) PORT or (2) PASS followed by the MLSD command, or (2) the remote server interface, as demonstrated by the Infigo FTPStress Fuzzer.

Frequently asked questions

What is CVE-2006-2173?
Buffer overflow in FileZilla FTP Server 2.2.22 allows remote authenticated attackers to cause a denial of service and possibly execute arbitrary code via a long (1) PORT or (2) PASS followed by the MLSD command, or (2) the remote server interface, as demonstrated by the Infigo FTPStress Fuzzer.
How severe is CVE-2006-2173?
CVE-2006-2173 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2006-2173 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-2173?
CVE-2006-2173 affects Filezilla Filezilla Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-2173?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-2173 published?
CVE-2006-2173 was published on 2006-05-04 and last updated on 2026-06-16.

References

Affected products (1)