CVE-2019-25681: Xlightftpd Xlight FTP Server

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Xlight FTP Server 3.9.1 contains a structured exception handler (SEH) overwrite vulnerability that allows local attackers to crash the application and overwrite SEH pointers by supplying a crafted buffer string. Attackers can inject a 428-byte payload through the program execution field in virtual server configuration to trigger a buffer overflow that corrupts the SEH chain and enables potential code execution.

Affected products

• Xlightftpd Xlight FTP Server: version 3.9.1 only

Published 2026-04-05. Last modified 2026-07-24.