CVE-2013-5709
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.
- EPSS
- 3.0% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
- CWE
- CWE-189
- Published
- Modified
- Record from
- the NVD, synced
Affected
- siemens:scalance_x-200
- siemens:scalance_x-200_series_firmware
- siemens:scalance_x-200rna
- siemens:scalance_x200-4p_irt
- siemens:scalance_x201-3p_irt
- siemens:scalance_x202-2irt
- siemens:scalance_x202-2p_irt
- siemens:scalance_x204irt
- siemens:scalance_xf-200
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