CVE-2026-105420
Wing Soft Technology Wing FTP Server
- Wing Soft Technology Wing FTP Server
- Critical
- CVSS 9.4
- Fixed version listed
Summary
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.
From the CVE record.
Read the original description
CVE record
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.
What to do
Fixed version listed
Affected products
| Product | Affected | Fixed in |
|---|---|---|
| Wing Soft Technology Wing FTP Server | before 8.2.6 | 8.2.6 |
Scores and signals
- Exploitation
- No known exploitation
- Severity
- Critical, CVSS 9.4 (v4.0, scored by CERT-PL)
- Weakness
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- Vendor
- Wing Soft Technology, Wing FTP Server
Timeline
- First listed as critical by cve.now. Affected and fixed versions come from the CVE record, once one is published.