{"id":"CVE-2022-45794","aliases":["EUVD-2022-48650","GHSA-j4xh-qhcf-rpxf"],"status":"published","title":"Omron CJ-series and CS-series unauthenticated filesystem access.","description":"An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files on the PLC internal memory and memory card.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00536,"percentile":0.45504,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2024-01-10T22:56:58Z","modified":"2026-06-17T05:10:44Z","products":[{"vendor":"omron","product":"cj-series and cs-series cpu modules"},{"vendor":"omron","product":"sysmac_cj1g-cpu42p_firmware"},{"vendor":"omron","product":"sysmac_cj1g-cpu43p_firmware"},{"vendor":"omron","product":"sysmac_cj1g-cpu44p_firmware"},{"vendor":"omron","product":"sysmac_cj1g-cpu45p_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu64-eip_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu64_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu65-eip_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu65_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu66-eip_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu66_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu67-eip_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu67_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu68-eip_firmware"},{"vendor":"omron","product":"sysmac_cj2h-cpu68_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu11_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu12_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu13_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu14_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu15_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu31_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu32_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu33_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu34_firmware"},{"vendor":"omron","product":"sysmac_cj2m-cpu35_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu44sa_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu65h_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu65p_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu67h_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu67ha_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu67p_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu67sa_firmware"},{"vendor":"omron","product":"sysmac_cs1d-cpu68ha_firmware"},{"vendor":"omron","product":"sysmac_cs1g-cpu42h_firmware"},{"vendor":"omron","product":"sysmac_cs1g-cpu43h_firmware"},{"vendor":"omron","product":"sysmac_cs1g-cpu44h_firmware"},{"vendor":"omron","product":"sysmac_cs1g-cpu45h_firmware"},{"vendor":"omron","product":"sysmac_cs1h-cpu63h_firmware"},{"vendor":"omron","product":"sysmac_cs1h-cpu64h_firmware"},{"vendor":"omron","product":"sysmac_cs1h-cpu65h_firmware"},{"vendor":"omron","product":"sysmac_cs1h-cpu66h_firmware"},{"vendor":"omron","product":"sysmac_cs1h-cpu67h_firmware"}],"references":[{"url":"https://www.fa.omron.co.jp/product/security/assets/pdf/en/OMSR-2023-002_en.pdf","tags":["x_transferred","Vendor Advisory"]},{"url":"https://www.dragos.com/advisory/omron-plc-and-engineering-software-network-and-file-format-access/","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-45794"},{"url":"https://github.com/advisories/GHSA-j4xh-qhcf-rpxf"}],"sources":{"cve":[{"id":"CVE-2022-45794","title":"Omron CJ-series and CS-series unauthenticated filesystem access.","description":"An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files on the PLC internal memory and memory card.\n","status":"published","published":"2024-01-10T22:56:58.836Z","modified":"2025-05-22T15:46:32.685Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:34:31.184134Z"}],"euvd":[{"id":"EUVD-2022-48650","description":"An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files on the PLC internal memory and memory card.\n","status":"published","published":"2024-01-10T22:56:58Z","modified":"2025-05-22T15:46:32Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T20:32:40.249574Z"}],"ghsa":[{"id":"GHSA-j4xh-qhcf-rpxf","title":"An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions)...","description":"An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files form the PLC internal memory and memory card.\n","status":"published","published":"2024-01-11T00:30:26Z","modified":"2024-01-11T00:30:33Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:55:23.490471Z"}],"nvd":[{"id":"CVE-2022-45794","description":"An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files on the PLC internal memory and memory card.\n","status":"published","published":"2024-01-10T23:15:08.397Z","modified":"2026-06-17T05:10:44.91Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:07:39.811118Z"}]}}