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.

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History

Sun, 05 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow
First Time appeared Xlightftpd
Xlightftpd xlight Ftp
Weaknesses CWE-787
CPEs cpe:2.3:a:xlightftpd:xlight_ftp:3.9.1:*:*:*:*:*:*:*
Vendors & Products Xlightftpd
Xlightftpd xlight Ftp
References
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-06T18:24:46.806Z

Reserved: 2026-04-05T13:33:54.194Z

Link: CVE-2019-25681

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-05T21:16:46.457

Modified: 2026-04-05T21:16:46.457

Link: CVE-2019-25681

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses