CVE-2013-6920

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Summary

CVECVE-2013-6920
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2013-12-07 00:55:04 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionSiemens 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.

Risk And Classification

Primary CVSS: v2.0 10 from [email protected]

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

EPSS: 0.011610000 probability, percentile 0.786720000 (date 2026-04-29)

Problem Types: CWE-287 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Siemens Sinamics G110 - All All All
Hardware Siemens Sinamics G110d - All All All
Hardware Siemens Sinamics G120 - All All All
Hardware Siemens Sinamics G120c - All All All
Hardware Siemens Sinamics G120d - All All All
Hardware Siemens Sinamics G120p - All All All
Hardware Siemens Sinamics G130 - All All All
Hardware Siemens Sinamics G150 - All All All
Hardware Siemens Sinamics G180 - All All All
Hardware Siemens Sinamics S110 - All All All
Hardware Siemens Sinamics S120 - All All All
Hardware Siemens Sinamics S120cm - All All All
Hardware Siemens Sinamics S150 - All All All
Operating System Siemens Sinamics S/g Family Firmware All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/pdf/ssa-742938.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com
Siemens af854a3a-2127-422b-91ae-364da2661108 www.siemens.com Vendor Advisory
Siemens SINAMICS S/G Authentication Bypass Vulnerability | ICS-CERT af854a3a-2127-422b-91ae-364da2661108 ics-cert.us-cert.gov US Government Resource
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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