{"cve":"CVE-2020-28391","nvd":{"published":"2021-01-12T21:15:18.120","modified":"2026-06-17T03:10:22.127","status":"Modified","description":"A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-321","CWE-798"],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf","https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02","https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf","https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02"],"products":["siemens:scalance_x200-4pirt_firmware","siemens:scalance_x201-3pirt_firmware","siemens:scalance_x202-2irt_firmware","siemens:scalance_x202-2pirt_firmware","siemens:scalance_x202-2pirt_siplus_net_firmware","siemens:scalance_x204irt_firmware","siemens:scalance_x307-3_firmware","siemens:scalance_x307-3ld_firmware","siemens:scalance_x308-2_firmware","siemens:scalance_x308-2ld_firmware","siemens:scalance_x308-2lh\\+_firmware","siemens:scalance_x308-2lh_firmware","siemens:scalance_x308-2m_firmware","siemens:scalance_x308-2m_ts_firmware","siemens:scalance_x310_firmware","siemens:scalance_x310fe_firmware","siemens:scalance_x320-1fe_firmware","siemens:scalance_x320-3ldfe_firmware","siemens:scalance_xb205-3_firmware","siemens:scalance_xb205-3ld_firmware","siemens:scalance_xb208_firmware","siemens:scalance_xb213-3_firmware","siemens:scalance_xb213-3ld_firmware","siemens:scalance_xb216_firmware","siemens:scalance_xc206-2_firmware","siemens:scalance_xc206-2g_poe__firmware","siemens:scalance_xc206-2g_poe_eec_firmware","siemens:scalance_xc206-2sfp_eec_firmware","siemens:scalance_xc206-2sfp_firmware","siemens:scalance_xc206-2sfp_g_\\(e\\/ip\\)_firmware","siemens:scalance_xc206-2sfp_g_eec_firmware","siemens:scalance_xc206-2sfp_g_firmware","siemens:scalance_xc208_firmware","siemens:scalance_xc208eec_firmware","siemens:scalance_xc208g_\\(e\\/ip\\)_firmware","siemens:scalance_xc208g_eec_firmware","siemens:scalance_xc208g_firmware","siemens:scalance_xc208g_poe_firmware","siemens:scalance_xc216-4c_firmware","siemens:scalance_xc216-4c_g_\\(e\\/ip\\)_firmware","siemens:scalance_xc216-4c_g_eec_firmware","siemens:scalance_xc216-4c_g_firmware","siemens:scalance_xc216_firmware","siemens:scalance_xc216eec_firmware","siemens:scalance_xc224-4c_g_\\(e\\/ip\\)_firmware","siemens:scalance_xc224-4c_g__firmware","siemens:scalance_xc224-4c_g_eec_firmware","siemens:scalance_xc224__firmware","siemens:scalance_xf201-3p_irt_firmware","siemens:scalance_xf202-2p_irt_firmware"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2020-28391","score":0.01132,"percentile":0.66459,"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."]}