What’s Vulnerable › Vulnerabilities

CVE-2013-5709

• Severity: high (CVSS 8.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-09-17 · updated 2026-06-16
• Weakness: CWE-189

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.

Affected products

• Siemens Scalance X-200: all versions
• Siemens Scalance X-200 Series Firmware: through 4.4; 4.3
• Siemens Scalance X-200Rna: all versions
• Siemens SCALANCE X200-4P IRT: all versions
• Siemens SCALANCE X201-3P IRT: all versions
• Siemens SCALANCE X202-2IRT: all versions
• Siemens SCALANCE X202-2P IRT: all versions
• Siemens SCALANCE X204IRT: all versions
• Siemens Scalance Xf-200: all versions

References

• http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01
• http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdf
• http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01
• http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdf

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