{"cve":"CVE-2013-5709","nvd":{"published":"2013-09-17T12:04:28.820","modified":"2026-06-16T23:59:17.380","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-189"],"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"],"products":["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"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2013-5709","score":0.02988,"percentile":0.87313,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}