{"id":"CVE-2023-4625","aliases":["EUVD-2023-54478","GHSA-23wc-j7fg-6xp5"],"status":"published","title":"Denial-of-Service（DoS） Vulnerability in Web server function on MELSEC Series CPU module","description":"Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01344,"percentile":0.71597,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-307"],"published":"2023-11-06T04:57:44Z","modified":"2026-06-17T06:38:14Z","products":[{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-30mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-30mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-30mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-40mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-40mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-40mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-60mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-60mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-60mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-80mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-80mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5s-80mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-32mr/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-32mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-32mt/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-32mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-32mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-32mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-64mr/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-64mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-64mt/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-64mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-64mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-64mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-80mr/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-80mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-80mt/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-80mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-80mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5u-80mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-32mr/ds-ts"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-32mt/d"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-32mt/ds-ts"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-32mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-32mt/dss-ts"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-64mt/d"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-64mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-96mt/d"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uc-96mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mr/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mr/es-a"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mt/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mt/es-a"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-24mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mr/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mr/es-a"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mt/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mt/es-a"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-40mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mr/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mr/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mr/es-a"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mt/ds"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mt/dss"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mt/es"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mt/es-a"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-f series fx5uj-60mt/ess"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r00cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r01cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r02cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r04cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r04encpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r08cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r08encpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r08pcpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r120cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r120encpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r120pcpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r16cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r16encpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r16pcpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r32cpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r32encpu"},{"vendor":"mitsubishi electric corporation","product":"melsec iq-r series r32pcpu"},{"vendor":"mitsubishielectric","product":"fx5s-30mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-30mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-30mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-40mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-40mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-40mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-60mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-60mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-60mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-80mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-80mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5s-80mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-32mr\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-32mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-32mt\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-32mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-32mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-32mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-64mr\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-64mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-64mt\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-64mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-64mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-64mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-80mr\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-80mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-80mt\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-80mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-80mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5u-80mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-32mr\\/ds-ts_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-32mt\\/d_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-32mt\\/ds-ts_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-32mt\\/dss-ts_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-32mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-64mt\\/d_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-64mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-96mt\\/d_firmware"},{"vendor":"mitsubishielectric","product":"fx5uc-96mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mr\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mr\\/es-a_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mt\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mt\\/es-a_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-24mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mr\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mr\\/es-a_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mt\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mt\\/es-a_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-40mt\\/ess_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mr\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mr\\/es-a_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mr\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mt\\/ds_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mt\\/dss_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mt\\/es-a_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mt\\/es_firmware"},{"vendor":"mitsubishielectric","product":"fx5uj-60mt\\/ess_firmware"}],"references":[{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-014_en.pdf","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/vu/JVNVU94620134","tags":["government-resource","x_transferred","Third Party Advisory"]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02","tags":["government-resource","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4625"},{"url":"https://github.com/advisories/GHSA-23wc-j7fg-6xp5"}],"sources":{"cve":[{"id":"CVE-2023-4625","title":"Denial-of-Service（DoS） Vulnerability in Web server function on MELSEC Series CPU module","description":"Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.","status":"published","published":"2023-11-06T04:57:44.446Z","modified":"2025-02-27T20:34:25.71Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:35:30.474787Z"}],"euvd":[{"id":"EUVD-2023-54478","description":"Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.","status":"published","published":"2023-11-06T04:57:44Z","modified":"2025-02-27T20:34:25Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T20:53:21.469581Z"}],"ghsa":[{"id":"GHSA-23wc-j7fg-6xp5","title":"Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric...","description":"Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.","status":"published","published":"2023-11-06T06:30:26Z","modified":"2023-11-06T06:30:35Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:54:52.133061Z"}],"nvd":[{"id":"CVE-2023-4625","description":"Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.","status":"published","published":"2023-11-06T05:15:15.187Z","modified":"2026-06-17T06:38:14.737Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:08:43.669554Z"}]}}