{"id":"CVE-2020-6986","aliases":["EUVD-2020-28126","GHSA-jpcw-9g3f-frpr"],"status":"published","title":"In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets...","description":"In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.","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":"2026-11-10","score":0.01592,"percentile":0.75901,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2020-03-05T20:05:05Z","modified":"2026-06-17T03:24:04Z","products":[{"vendor":"omron","product":"omron plc cj series"},{"vendor":"omron","product":"plc_cj1_firmware"},{"vendor":"omron","product":"plc_cj2_firmware"}],"references":[{"url":"https://www.us-cert.gov/ics/advisories/icsa-20-063-03","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-6986"},{"url":"https://github.com/advisories/GHSA-jpcw-9g3f-frpr"}],"sources":{"cve":[{"id":"CVE-2020-6986","description":"In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.","status":"published","published":"2020-03-05T20:05:05Z","modified":"2026-06-02T19:52:04.759Z","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":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:52.268457Z"}],"euvd":[{"id":"EUVD-2020-28126","description":"In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.","status":"published","published":"2020-03-05T20:05:05Z","modified":"2026-06-02T19:52:04Z","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"}],"updated_at":"2026-11-02T18:20:55.231104Z"}],"ghsa":[{"id":"GHSA-jpcw-9g3f-frpr","title":"In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets...","description":"In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.","status":"published","published":"2022-05-24T17:10:18Z","modified":"2026-06-02T21:30:30Z","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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:08:30.158602Z"}],"nvd":[{"id":"CVE-2020-6986","description":"In all versions of Omron PLC CJ Series, an attacker can send a series of specific data packets within a short period, causing a service error on the PLC Ethernet module, which in turn causes a PLC service denied result.","status":"published","published":"2020-03-05T21:15:10.673Z","modified":"2026-06-17T03:24:04.15Z","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":"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":"secondary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:05:54.796125Z"}]}}