{"id":"CVE-2024-8936","aliases":["EUVD-2024-49494","GHSA-rrmf-46w6-f74r"],"status":"published","title":"CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality...","description":"CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality of controller memory\nafter a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call used to tamper\nwith memory.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00499,"percentile":0.43063,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2024-11-13T04:23:59Z","modified":"2026-06-17T08:23:35Z","products":[{"vendor":"schneider electric","product":"modicon m340 cpu (part numbers bmxp34*)"}],"references":[{"url":"https://download.schneider-electric.com/doc/SEVD-2024-317-03/SEVD-2024-317-03.pdf"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-8936"},{"url":"https://github.com/advisories/GHSA-rrmf-46w6-f74r"}],"sources":{"cve":[{"id":"CVE-2024-8936","description":"CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality of controller memory\nafter a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call used to tamper\nwith memory.","status":"published","published":"2024-11-13T04:23:59.219Z","modified":"2024-11-13T15:21:25.836Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:09.540667Z"}],"euvd":[{"id":"EUVD-2024-49494","description":"CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality of controller memory\nafter a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call used to tamper\nwith memory.","status":"published","published":"2024-11-13T04:23:59Z","modified":"2024-11-13T15:21:25Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-03T00:05:02.514936Z"}],"ghsa":[{"id":"GHSA-rrmf-46w6-f74r","title":"CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality...","description":"CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality of controller memory\nafter a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call used to tamper\nwith memory.","status":"published","published":"2024-11-13T06:30:29Z","modified":"2024-11-13T06:30:35Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:58:49.226785Z"}],"nvd":[{"id":"CVE-2024-8936","description":"CWE-20: Improper Input Validation vulnerability exists that could lead to loss of confidentiality of controller memory\nafter a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call used to tamper\nwith memory.","status":"published","published":"2024-11-13T05:15:20.54Z","modified":"2026-06-17T08:23:35.357Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:10:36.931115Z"}]}}