CVE-2013-6920

CriticalCVSS 10.0/10Last modified Jun 17, 2026

Description

Siemens SINAMICS S/G controllers with firmware before 4.6.11 do not require authentication for FTP and TELNET sessions, which allows remote attackers to bypass intended access restrictions via TCP traffic to port (1) 21 or (2) 23.

Metrics

CVSS 2.0 10.0/10AV:N/AC:L/Au:N/C:C/I:C/A:C

Weakness enumeration

CWE-287

Affected software

No affected versions have been published.

Timeline

Published: Dec 7, 2013
Last modified: Jun 17, 2026
NVD status: Modified

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