The FTP server on Siemens SCALANCE X-300 switches with firmware before 4.0 and SCALANCE X 408 switches with firmware before 4.0 allows remo…

published 2015-01-21 11y ago modified 2026-06-17 4mo ago also EUVD-2014-8316

cvss: 6.8; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

The FTP server on Siemens SCALANCE X-300 switches with firmware before 4.0 and SCALANCE X 408 switches with firmware before 4.0 allows remote authenticated users to cause a denial of service (reboot) via crafted FTP packets.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-15-020-01 updated 2025-06-06 cvss 6.8

Siemens SCALANCE X-300/X408 Switch Family DOS Vulnerabilities

Siemens SCALANCE X-300 switch family <V4.0 Siemens SCALANCE X408 <V4.0
affected: mitigation

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	6.8	AV:N/AC:L/Au:S/C:N/I:N/A:C

Classification

Weakness

CWE-20 Improper Input Validation

References

Sources

CVE List CVE-2014-8479
NVD CVE-2014-8479

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.