{"id":"CVE-2020-7584","aliases":["EUVD-2020-28709","GHSA-vpvj-7qfp-4qgg"],"status":"published","title":"A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions \u003e= V2.2 \u003c V2...","description":"A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions \u003e= V2.2 \u003c V2.5.1). Affected devices do not properly handle large numbers of new incomming connections and could crash under certain circumstances. An attacker may leverage this to cause a Denial-of-Service situation.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01044,"percentile":0.64356,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2020-07-14T13:18:05Z","modified":"2026-06-17T03:25:03Z","products":[{"vendor":"siemens","product":"simatic_s7-200_smart_sr_cpu_firmware"},{"vendor":"siemens","product":"simatic_s7-200_smart_st_cpu_firmware"},{"vendor":"siemens ag","product":"simatic s7-200 smart cpu family"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-589181.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7584"},{"url":"https://github.com/advisories/GHSA-vpvj-7qfp-4qgg"}],"sources":{"cve":[{"id":"CVE-2020-7584","description":"A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions \u003e= V2.2 \u003c V2.5.1). Affected devices do not properly handle large numbers of new incomming connections and could crash under certain circumstances. An attacker may leverage this to cause a Denial-of-Service situation.","status":"published","published":"2020-07-14T13:18:05Z","modified":"2024-08-04T09:33:19.577Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:58.331892Z"}],"euvd":[{"id":"EUVD-2020-28709","description":"A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions \u003e= V2.2 \u003c V2.5.1). Affected devices do not properly handle large numbers of new incomming connections and could crash under certain circumstances. An attacker may leverage this to cause a Denial-of-Service situation.","status":"published","published":"2020-07-14T13:18:05Z","modified":"2024-08-04T09:33:19Z","updated_at":"2026-11-03T03:07:59.603443Z"}],"ghsa":[{"id":"GHSA-vpvj-7qfp-4qgg","title":"A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions \u003e= V2.2 \u003c V2...","description":"A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions \u003e= V2.2 \u003c V2.5.1). Affected devices do not properly handle large numbers of new incomming connections and could crash under certain circumstances. An attacker may leverage this to cause a Denial-of-Service situation.","status":"published","published":"2022-05-24T17:22:55Z","modified":"2023-01-29T05:03:40Z","updated_at":"2026-11-02T14:45:22.292804Z"}],"nvd":[{"id":"CVE-2020-7584","description":"A vulnerability has been identified in SIMATIC S7-200 SMART CPU family (All versions \u003e= V2.2 \u003c V2.5.1). Affected devices do not properly handle large numbers of new incomming connections and could crash under certain circumstances. An attacker may leverage this to cause a Denial-of-Service situation.","status":"published","published":"2020-07-14T14:15:18.65Z","modified":"2026-06-17T03:25:03.85Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:06:09.126752Z"}]}}