{"id":"CVE-2020-5594","aliases":["EUVD-2020-26755","GHSA-2vf3-pgp6-m4w5"],"status":"published","title":"Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a...","description":"Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a vulnerability that allows cleartext transmission of sensitive information between CPU modules and GX Works3 and/or GX Works2 via unspecified vectors.","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":"2026-11-09","score":0.01328,"percentile":0.71229,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-319"],"published":"2020-06-23T07:35:23Z","modified":"2026-06-17T03:21:39Z","products":[{"vendor":"mitsubishi electric corporation","product":"melsec iq-r, iq-f, q, l, and fx series cpu modules"},{"vendor":"mitsubishielectric","product":"melsec-fx_firmware"},{"vendor":"mitsubishielectric","product":"melsec-l_firmware"},{"vendor":"mitsubishielectric","product":"melsec-q_firmware"},{"vendor":"mitsubishielectric","product":"melsec_iq-f_firmware"},{"vendor":"mitsubishielectric","product":"melsec_iq-r_firmware"}],"references":[{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-003_en.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-003.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/en/vu/JVNVU91424496/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5594"},{"url":"https://github.com/advisories/GHSA-2vf3-pgp6-m4w5"}],"sources":{"cve":[{"id":"CVE-2020-5594","description":"Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a vulnerability that allows cleartext transmission of sensitive information between CPU modules and GX Works3 and/or GX Works2 via unspecified vectors.","status":"published","published":"2020-06-23T07:35:23Z","modified":"2024-08-04T08:30:24.558Z","updated_at":"2026-11-02T14:35:47.22408Z"}],"euvd":[{"id":"EUVD-2020-26755","description":"Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a vulnerability that allows cleartext transmission of sensitive information between CPU modules and GX Works3 and/or GX Works2 via unspecified vectors.","status":"published","published":"2020-06-23T07:35:23Z","modified":"2024-08-04T08:30:24Z","updated_at":"2026-11-03T03:08:06.272693Z"}],"ghsa":[{"id":"GHSA-2vf3-pgp6-m4w5","title":"Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a...","description":"Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a vulnerability that allows cleartext transmission of sensitive information between CPU modules and GX Works3 and/or GX Works2 via unspecified vectors.","status":"published","published":"2022-05-24T17:21:31Z","modified":"2023-01-29T05:02:58Z","updated_at":"2026-11-02T14:45:12.832224Z"}],"nvd":[{"id":"CVE-2020-5594","description":"Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a vulnerability that allows cleartext transmission of sensitive information between CPU modules and GX Works3 and/or GX Works2 via unspecified vectors.","status":"published","published":"2020-06-23T08:15:10.487Z","modified":"2026-06-17T03:21:39.73Z","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-319"],"updated_at":"2026-11-02T14:06:07.249892Z"}]}}