CVE-2026-105420
Path Traversal in Wing WFTP Server leading to Remote Code Execution
- State
- Published
- Severity
- 9.4 Critical
- Published
- Oct 28, 2026
- Updated
- Oct 28, 2026
- Reserved
- Oct 5, 2026
Description
Wing FTP Server does not verify user's base folder. An attacker with admin privileges can add user directories via scripts, allowing the added directories to escape the base folder. This allows the attacker to write files on the system and can lead to remote code execution with process owner privileges.Critically, since the installation guide mentions running the command with `sudo`, the files are created as “root.”
This issue was fixed in version 8.2.6.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.4 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | CERT-PL |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
Wing FTP ServerWing Soft Technology |
|
References
- https://cert.pl/en/posts/2026/10/CVE-2026-105420third-party-advisory
- https://www.wftpserver.com/product
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.