CVE-2006-6565
MediumPublic exploitFileZilla Server before 0.9.22 allows remote attackers to cause a denial of service (crash) via a wildcard argument to the (1) LIST or (2) NLST commands, which results in a NULL pointer dereference, a different set of vectors than CVE-2006-6564.
Published Dec 15, 2006 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2006-6565 is a medium-severity vulnerability (CVSS 4.0 v2) affecting Filezilla Server (Filezilla-Project).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 71% probability of exploitation in the next 30 days.
- Fixed versions are available, including Filezilla Server 0.9.22.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
4.0
AV:N/AC:L/Au:S/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
71%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
FileZilla Server before 0.9.22 allows remote attackers to cause a denial of service (crash) via a wildcard argument to the (1) LIST or (2) NLST commands, which results in a NULL pointer dereference, a different set of vectors than CVE-2006-6564. NOTE: CVE analysis suggests that the problem might be due to a malformed PORT command.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Filezilla ServerFilezilla-Project | See advisory | 0.9.22 |
Patched Releases
Filezilla Server
0.9.22
Timeline
Publicly disclosed
Dec 15, 2006
Last updated
Apr 22, 2026
Weakness Type
- CWE-476 NULL Pointer Dereference
References
- advisoryfilezilla-commands-dos(30853)
- advisoryhttp://sourceforge.net/project/shownotes.php?release_id=470364&group_id=21558
- advisoryADV-2006-4937
- exploit2914
FAQ
Common Questions.
FileZilla Server before 0.9.22 allows remote attackers to cause a denial of service (crash) via a wildcard argument to the (1) LIST or (2) NLST commands, which results in a NULL pointer dereference, a different set of vectors than CVE-2006-6564.
Affected: Filezilla Server (Filezilla-Project). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Filezilla Server 0.9.22.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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