CVE-2026-105420
Wing FTP Server does not verify user's base folder
- Risk score
- 56/100
- CVSS
- 9.4 v4.0
- Published
- 28 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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, sin…
- Affected
- See advisory
- Fix
- Upgrade the product to 8.2.6 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 9.4 critical
References
Original 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.
Last activity 28 Oct 2026. Patch Forecast updates every hour.