{"id":"CVE-2022-40265","aliases":["EUVD-2022-43563","GHSA-vgcx-cp27-7f7h"],"status":"published","title":"Denial of Service (DoS) Vulnerability in MELSEC iQ-R Series Ethernet Interface Module","description":"Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version \"65\" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version \"65\" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01016,"percentile":0.63552,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2022-11-30T00:04:43Z","modified":"2026-06-17T05:01:11Z","products":[{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r04/08/16/32/120encpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series rj71en71"},{"vendor":"mitsubishielectric","product":"r04encpu_firmware"},{"vendor":"mitsubishielectric","product":"r08encpu_firmware"},{"vendor":"mitsubishielectric","product":"r120encpu_firmware"},{"vendor":"mitsubishielectric","product":"r16encpu_firmware"},{"vendor":"mitsubishielectric","product":"r32encpu_firmware"},{"vendor":"mitsubishielectric","product":"rj71en71_firmware"}],"references":[{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-017_en.pdf","tags":["x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/vu/JVNVU94702422","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-40265"},{"url":"https://github.com/advisories/GHSA-vgcx-cp27-7f7h"}],"sources":{"cve":[{"id":"CVE-2022-40265","title":"Denial of Service (DoS) Vulnerability in MELSEC iQ-R Series Ethernet Interface Module","description":"Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version \"65\" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version \"65\" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.","status":"published","published":"2022-11-30T00:04:43.069Z","modified":"2025-04-24T18:45:03.895Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:30.493103Z"}],"euvd":[{"id":"EUVD-2022-43563","description":"Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version \"65\" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version \"65\" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.","status":"published","published":"2022-11-30T00:04:43Z","modified":"2025-04-24T18:45:03Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:03.523577Z"}],"ghsa":[{"id":"GHSA-vgcx-cp27-7f7h","title":"Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series...","description":"Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version \"65\" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version \"65\" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.","status":"published","published":"2022-11-30T03:30:18Z","modified":"2023-01-31T05:02:37Z","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-20"],"updated_at":"2026-11-02T14:48:17.918767Z"}],"nvd":[{"id":"CVE-2022-40265","description":"Improper Input Validation vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series RJ71EN71 Firmware version \"65\" and prior and Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120ENCPU Network Part Firmware version \"65\" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition by sending specially crafted packets. A system reset is required for recovery.","status":"published","published":"2022-11-30T01:15:09.873Z","modified":"2026-06-17T05:01:11.83Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","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:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:32.827264Z"}]}}