FileZilla Server PORT confused deputy
Priority LOW 21CWE-441Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
A vulnerability, which was classified as problematic, was found in FileZilla Server up to 0.9.50. This affects an unknown part of the component PORT Handler. The manipulation leads to unintended intermediary. It is possible to initiate the attack remotely. Upgrading to version 0.9.51 is able to address this issue. It is recommended to upgrade the affected component.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00559 46th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FileZilla | Server | 0.9.0; 0.9.1; 0.9.2; 0.9.3; 0.9.4; 0.9.5; 0.9.6; 0.9.7; 0.9.8; 0.9.9; 0.9.10; 0.9.11; 0.9.12; 0.9.13; 0.9.14; 0.9.15; 0.9.16; 0.9.17; 0.9.18; 0.9.19; 0.9.20; 0.9.21; 0.9.22; 0.9.23; 0.9.24; 0.9.25; 0.9.26; 0.9.27; 0.9.28; 0.9.29; 0.9.30; 0.9.31; 0.9.32; 0.9.33; 0.9.34; 0.9.35; 0.9.36; 0.9.37; 0.9.38; 0.9.39; 0.9.40; 0.9.41; 0.9.42; 0.9.43; 0.9.44; 0.9.45; 0.9.46; 0.9.47; 0.9.48; 0.9.49; 0.9.50 | — | No fix listed | CNA |
- Server VendorFileZilla Affected 0.9.0; 0.9.1; 0.9.2; 0.9.3; 0.9.4; 0.9.5; 0.9.6; 0.9.7; 0.9.8; 0.9.9; 0.9.10; 0.9.11; 0.9.12; 0.9.13; 0.9.14; 0.9.15; 0.9.16; 0.9.17; 0.9.18; 0.9.19; 0.9.20; 0.9.21; 0.9.22; 0.9.23; 0.9.24; 0.9.25; 0.9.26; 0.9.27; 0.9.28; 0.9.29; 0.9.30; 0.9.31; 0.9.32; 0.9.33; 0.9.34; 0.9.35; 0.9.36; 0.9.37; 0.9.38; 0.9.39; 0.9.40; 0.9.41; 0.9.42; 0.9.43; 0.9.44; 0.9.45; 0.9.46; 0.9.47; 0.9.48; 0.9.49; 0.9.50 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:filezilla-project:filezilla_server:*:*:*:*:*:*:*:* | before 0.9.51 | Vulnerable | Filezilla-Project |
- cpe:2.3:a:filezilla-project:filezilla_server:*:*:*:*:*:*:*:* Versions before 0.9.51 Vulnerable ·Filezilla-Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2015-10003
- 2026-10-03 Alias added: GHSA-5jfq-8pvr-x22v
References
More FileZilla vulnerabilities
- TI-2016-09123 FileZilla Client Installer uninstall.exe unquoted search path CVSS 3.1HIGH 7.8
- TI-2005-03407 Buffer overflow in FileZilla Server Terminal 0.9.4d may allow remote attackers to cause a… CVSS 2.0HIGH 7.8
- TI-2007-02236 Multiple format string vulnerabilities in FileZilla before 2.2.32 allow remote attackers… CVSS 2.0HIGH 9.3
- TI-2007-00306 Multiple buffer overflows in FileZilla before 2.2.30a allow remote attackers to execute… CVSS 2.0HIGH 9.3
- TI-2019-03838 Untrusted search path in FileZilla CVSS 3.1HIGH 7.8
- TI-2007-00308 Format string vulnerability in the LogMessage function in FileZilla before 3.0.0-beta5… CVSS 2.0HIGH 7.5
Sources
- CVE-2015-10003 · CVE Program
- CVE-2015-10003 · NVD
- FIRST EPSS
- GHSA-5jfq-8pvr-x22v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences