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Fencer Intel
high 8.3

CVE-2013-5709 json

The authentication implementation in the web server on Siemens SCALANCE X-200 switches with firmware before 5.0.0 does not use a sufficient…

published 2013-09-17 13 y ago modified 2026-06-16 4 mo ago also EUVD-2013-5546

cvss
8.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

The authentication implementation in the web server on Siemens SCALANCE X-200 switches with firmware before 5.0.0 does not use a sufficient source of entropy for generating values of random numbers, which makes it easier for remote attackers to hijack sessions by predicting a value.

Vendor advisories

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

cisa ICSA-13-254-01 updated cvss 8.3

Siemens SCALANCE X-200 Web Hijack Vulnerability

  • Siemens SCALANCE X-200 switch family firmware <V5.0.0. Siemens SCALANCE X-200 switch Machine-Readable Product Designation (MLFB) 6GK5224-0BA00-2AA3, 6GK5216-0BA00-2AA3, 6GK5212-2BB00-2AA3, 6GK5212-2BC00-2AA3
    affected: mitigation “Siemens security advisory is located here: (http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdf)”

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

2.99% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 8.3 AV:N/AC:M/Au:N/C:P/I:P/A:C

Classification

Weakness

References

Sources

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.