CVE-2019-25681

Name: CVE-2019-25681
Creator: NVD / NIST
Published: 2026-04-05T21:16:46.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2019-25681 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

8.6/10

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:X/V:X/RE:X/U:X

EPSS Probability

0.21%

11.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Xlightftpd	Xlight Ftp Server	3.9.1

References

https://www.exploit-db.com/exploits/46458Exploit, VDB Entry
https://www.vulncheck.com/advisories/xlight-ftp-server-seh-overwrite-buffer-overflowThird Party Advisory
https://www.xlightftpd.com/download/xlight.zipProduct
https://www.xlightftpd.com/index.htmProduct

Timeline

Published: Apr 5, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2019-25681?

How severe is CVE-2019-25681?

CVE-2019-25681 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2019-25681?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-25681?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST