Serv-U < SFTP Server Authentication Bypass Vulnerability

high Nessus Network Monitor Plugin ID 5712


The remote SFTP server is affected by an authentication bypass vulnerability.


The remote host is running Serv-U File Server, an FTP/SFTP Server for Windows.

Versions of Serv-U earlier than are potentially affected by a security bypass vulnerability in the SFTP module. By supplying a valid username and blank password, an attacker can gain unauthorized access to the affected application.


Upgrade to Serv-U version or later.

See Also

Plugin Details

Severity: High

ID: 5712

Family: SSH

Published: 11/18/2010

Updated: 3/6/2019

Nessus ID: 50659

Risk Information


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:F/RL:OF/RC:C


Risk Factor: High

Base Score: 7.3

Temporal Score: 6.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: E:F/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 11/16/2010

Vulnerability Publication Date: 11/16/2010

Reference Information

BID: 44905