TI-2019-15734 Aliases CVE-2019-25681 GHSA-x9m5-f2h9-hrgh

Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow

HIGH 72CWE-787Published 2026-04-05 · Updated 2026-04-06

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00212 11th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Xlightftpd	Xlight	3.9.1	—	No fix listed	CNA

Xlight VendorXlightftpd Affected 3.9.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:xlightftpd:xlight_ftp_server:3.9.1:::::::*	3.9.1	Vulnerable	Xlightftpd

cpe:2.3:a:xlightftpd:xlight_ftp_server:3.9.1:*:*:*:*:*:*:* Versions 3.9.1 Vulnerable ·Xlightftpd

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-25681
2026-10-03 Alias added: GHSA-x9m5-f2h9-hrgh

References

Exploit 1

ExploitDB-46458

Other 2

TI-2024-00677 Xlightftpd Xlight FTP Server Login denial of service CVSS 3.1HIGH 7.5
TI-2023-30169 Xlight FTP Server 3.9.3.6 Stack Buffer Overflow Vulnerability via Execute Program CVSS 4.0MEDIUM 5.1
TI-2009-04551 Multiple SQL injection vulnerabilities in Xlight FTP Server before 3.2.1, when ODBC… CVSS 2.0MEDIUM 6.8
TI-2010-02585 Directory traversal vulnerability in the SFTP/SSH2 virtual server in Xlight FTP Server… CVSS 2.0MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences