CVE-2013-6920
critical
CVSS v3
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CVSS v4 NEW
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VIR risk
10.0
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- http://ics-cert.us-cert.gov/advisories/ICSA-13-338-01
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-742938.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-742938.pdf
- http://ics-cert.us-cert.gov/advisories/ICSA-13-338-01
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-742938.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-742938.pdf
CWEs
CWE-287
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.