{"id":"CVE-2013-5709","aliases":["EUVD-2013-5546","GHSA-7qw8-4g2g-2m86"],"status":"published","title":"The authentication implementation in the web server on Siemens SCALANCE X-200 switches with...","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.","severity":{"version":"2.0","score":8.3,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02988,"percentile":0.87391,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-189"],"published":"2013-09-17T10:00:00Z","modified":"2026-06-16T23:59:17Z","products":[{"vendor":"siemens","product":"scalance_x-200"},{"vendor":"siemens","product":"scalance_x-200_series_firmware"},{"vendor":"siemens","product":"scalance_x-200rna"},{"vendor":"siemens","product":"scalance_x200-4p_irt"},{"vendor":"siemens","product":"scalance_x201-3p_irt"},{"vendor":"siemens","product":"scalance_x202-2irt"},{"vendor":"siemens","product":"scalance_x202-2p_irt"},{"vendor":"siemens","product":"scalance_x204irt"},{"vendor":"siemens","product":"scalance_xf-200"}],"references":[{"url":"http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01","tags":["x_refsource_MISC","x_transferred","US Government Resource"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdf","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-5709"},{"url":"https://github.com/advisories/GHSA-7qw8-4g2g-2m86"}],"sources":{"cve":[{"id":"CVE-2013-5709","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.","status":"published","published":"2013-09-17T10:00:00Z","modified":"2024-08-06T17:22:31.062Z","updated_at":"2026-11-02T14:34:55.508771Z"}],"euvd":[{"id":"EUVD-2013-5546","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.","status":"published","published":"2013-09-17T10:00:00Z","modified":"2024-08-06T17:22:31Z","updated_at":"2026-11-03T01:56:28.286421Z"}],"ghsa":[{"id":"GHSA-7qw8-4g2g-2m86","title":"The authentication implementation in the web server on Siemens SCALANCE X-200 switches with...","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.","status":"published","published":"2022-05-13T01:28:35Z","modified":"2023-02-01T05:08:01Z","updated_at":"2026-11-02T14:50:39.462624Z"}],"nvd":[{"id":"CVE-2013-5709","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.","status":"published","published":"2013-09-17T12:04:28.82Z","modified":"2026-06-16T23:59:17.38Z","cvss":[{"version":"2.0","score":8.3,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:02:35.248411Z"}]}}