CVE-2026-67193
MEDIUMXlight FTP Server < 3.9.5 Information Disclosure via USER Command
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/xlight-ftp-server-information-disclosure-via-user-command
Scores
CVSS v3
5.3
EPSS
0.0026
EPSS Percentile
18.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-203
Status
published
Products (1)
Xlight/Xlight FTP Server
< 3.9.5
Published
Jul 29, 2026
Tracked Since
Jul 29, 2026