CVE-2019-25681

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.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/46458	Exploit VDB Entry
https://www.vulncheck.com/advisories/xlight-ftp-server-seh-overwrite-buffer-overflow	Third Party Advisory
https://www.xlightftpd.com/download/xlight.zip	Product
https://www.xlightftpd.com/index.htm	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:xlightftpd:xlight_ftp_server:3.9.1:*:*:*:*:*:*:*

History

09 Apr 2026, 19:33

Type	Values Removed	Values Added
CPE		cpe:2.3:a:xlightftpd:xlight_ftp_server:3.9.1:::::::*
References	~~() https://www.exploit-db.com/exploits/46458 -~~	() https://www.exploit-db.com/exploits/46458 - Exploit, VDB Entry
References	~~() https://www.vulncheck.com/advisories/xlight-ftp-server-seh-overwrite-buffer-overflow -~~	() https://www.vulncheck.com/advisories/xlight-ftp-server-seh-overwrite-buffer-overflow - Third Party Advisory
References	~~() https://www.xlightftpd.com/download/xlight.zip -~~	() https://www.xlightftpd.com/download/xlight.zip - Product
References	~~() https://www.xlightftpd.com/index.htm -~~	() https://www.xlightftpd.com/index.htm - Product
First Time		Xlightftpd Xlightftpd xlight Ftp Server

05 Apr 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-05 21:16

Updated : 2026-04-09 19:33

NVD link : CVE-2019-25681

Mitre link : CVE-2019-25681

CVE.ORG link : CVE-2019-25681

JSON object : View

Products Affected

xlightftpd

xlight_ftp_server

CWE

CWE-787

Out-of-bounds Write

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