CVE-2026-105420

CRITICAL 9.4CVE-2026-105420 · Published 28/10/2026 · updated 28/10/2026

In short

CVE-2026-105420 is a CRITICAL (CVSS 9.4) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.52%, higher than 44.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

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.

References

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