CVE-2026-67193

Xlight FTP Server before 3.9.5 contains an information disclosure vulnerability that allows unauthenticated attackers to obtain the server's current GetTickCount() value by sending a USER command with a username ending in the :adm suffix. Attackers can trigger the admin protocol path within the standard FTP listener pre-authentication to leak timing information from the FTP 331 response without requiring a separate port or configuration change.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.vulncheck.com/advisories/xlight-ftp-server-information-disclosure-via-user-command
https://www.xlightftpd.com/whatsnew.htm

Configurations

No configuration.

History

23 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Xlight FTP Server anterior a la versión 3.9.5 contiene una vulnerabilidad de revelación de información que permite a atacantes no autenticados obtener el valor GetTickCount() actual del servidor enviando un comando USER con un nombre de usuario que termina en el sufijo :adm. Los atacantes pueden activar la ruta del protocolo de administración dentro de la pre-autenticación del oyente FTP estándar para filtrar información de temporización de la respuesta FTP 331 sin requerir un puerto separado o un cambio de configuración.

Information

Published : 2026-07-29 16:17

Updated : 2026-10-23 23:10

NVD link : CVE-2026-67193

Mitre link : CVE-2026-67193

CVE.ORG link : CVE-2026-67193

JSON object : View

Products Affected

No product.

CWE

CWE-203

Observable Discrepancy

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