{"id":"CVE-2020-28391","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-28391","generatedAt":"2026-10-27T22:26:34.446Z","title":"A vulnerability has been identified in SCALANCE X-200 switch family (incl.","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.","published":"2021-01-12T21:15:18.000Z","lastModified":"2026-06-17T03:10:22.000Z","status":"Modified","sourceIdentifier":"productcert@siemens.com","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-321","CWE-798"],"affected":["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 firmware","siemens/scalance xc206-2sfp eec firmware","siemens/scalance xc206-2sfp g firmware","siemens/scalance xc206-2sfp g \\(e\\/ip\\) firmware","siemens/scalance xc206-2sfp g eec firmware","siemens/scalance xc208 firmware","siemens/scalance xc208eec firmware","siemens/scalance xc208g firmware","siemens/scalance xc208g \\(e\\/ip\\) firmware","siemens/scalance xc208g eec firmware","siemens/scalance xc208g poe firmware","siemens/scalance xc216 firmware","siemens/scalance xc216-4c firmware","siemens/scalance xc216-4c g firmware","siemens/scalance xc216-4c g \\(e\\/ip\\) firmware","siemens/scalance xc216-4c g eec firmware","siemens/scalance xc216eec firmware","siemens/scalance xc224-4c g  firmware","siemens/scalance xc224-4c g \\(e\\/ip\\) firmware","siemens/scalance xc224-4c g eec firmware","siemens/scalance xc224  firmware","siemens/scalance xf201-3p irt firmware","siemens/scalance xf202-2p irt firmware","siemens/scalance xf204 firmware","siemens/scalance xf204-2 firmware","siemens/scalance xf204-2ba dna firmware","siemens/scalance xf204-2ba irt firmware","siemens/scalance xf204 dna firmware","siemens/scalance xf204irt firmware","siemens/scalance xf206-1 firmware","siemens/scalance xf208 firmware","siemens/scalance xp208 firmware","siemens/scalance xp208 \\(eip\\) firmware"],"epss":{"score":0.01132,"percentile":0.66225,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.13%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf","tags":["Vendor Advisory"],"source":"productcert@siemens.com"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02","tags":["Third Party Advisory","US Government Resource","Vendor Advisory"],"source":"productcert@siemens.com"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02","tags":["Third Party Advisory","US Government Resource","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-28391","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}