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Vulnerability record · CVE-2019-25681 · published 5 April 2026

CVE-2019-25681: Xlightftpd xlight ftp server out-of-bounds write vulnerability

Xlightftpd · Xlight Ftp Server

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.

8.6 CVSS 4.0 High EPSS 0.21% · top 90.2% CWE-787 · Out-of-bounds write
8.6CVSS 4.0 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
24 Jul 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.exploit-db.com/exploits/46458 ExploitVDB 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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-25681), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.