CVE-2019-25321: Internet-Soft FTP Navigator

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

FTP Navigator 8.03 contains a stack overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) registers. Attackers can craft a malicious payload that triggers a buffer overflow when pasted into the Custom Command textbox, enabling remote code execution and launching the calculator as proof of concept.

Affected products

• Internet-Soft FTP Navigator: up to and including 8.03

Published 2026-02-12. Last modified 2026-06-17.