{"id":"CVE-2020-28212","aliases":["EUVD-2020-20696","GHSA-6pcj-rq2g-gx86"],"status":"published","title":"A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists in PLC...","description":"A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause unauthorized command execution when a brute force attack is done over Modbus.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02757,"percentile":0.86433,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-307"],"published":"2020-11-19T21:03:43Z","modified":"2026-06-17T03:10:12Z","products":[{"vendor":"schneider-electric","product":"ecostruxure_control_expert"}],"references":[{"url":"https://www.se.com/ww/en/download/document/SEVD-2020-315-07","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28212"},{"url":"https://github.com/advisories/GHSA-6pcj-rq2g-gx86"}],"sources":{"cve":[{"id":"CVE-2020-28212","description":"A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause unauthorized command execution when a brute force attack is done over Modbus.","status":"published","published":"2020-11-19T21:03:43Z","modified":"2024-08-04T16:33:58.114Z","cwes":["CWE-307"],"updated_at":"2026-11-02T14:35:57.017407Z"}],"euvd":[{"id":"EUVD-2020-20696","description":"A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause unauthorized command execution when a brute force attack is done over Modbus.","status":"published","published":"2020-11-19T21:03:43Z","modified":"2024-08-04T16:33:58Z","updated_at":"2026-11-03T03:07:10.123634Z"}],"ghsa":[{"id":"GHSA-6pcj-rq2g-gx86","title":"A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists in PLC...","description":"A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause unauthorized command execution when a brute force attack is done over Modbus.","status":"published","published":"2022-05-24T22:28:20Z","modified":"2023-01-30T05:04:59Z","cwes":["CWE-307"],"updated_at":"2026-11-02T14:47:10.094761Z"}],"nvd":[{"id":"CVE-2020-28212","description":"A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause unauthorized command execution when a brute force attack is done over Modbus.","status":"published","published":"2020-11-19T22:15:13.49Z","modified":"2026-06-17T03:10:12.703Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:06:25.394006Z"}]}}