CVE-2013-5709

high
Published 2013-09-17 · Modified 2026-04-29
CVSS v3
CVSS v2
8.3
VIR risk
8.3

Description

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.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdf

References

CWEs

CWE-189

Verify integrity in audit chain (admin only). AS-IS.