{"cve":{"cve_id":"CVE-2021-22786","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00624,"epss_percentile":0.45227,"epss_as_of":"2026-06-23","description":"A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)","published_at":"2023-02-01T00:00:00Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-200"],"nvd_references":["https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-221-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2022-221-04-Modicon_Controllers_Ethernet_Modules_Security_Notification.pdf"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:15:04.584429Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"schneider-electric","vendor_name":"Schneider Electric","product_slug":"legacy-modicon-quantum","product_name":"Legacy Modicon Quantum","version_start":"All Versions","version_start_inclusive":true,"version_end":"All Versions","version_end_inclusive":true,"cpe23_uri":"cve5:schneider-electric:legacy-modicon-quantum:All Versions:All Versions"},{"vendor_slug":"schneider-electric","vendor_name":"Schneider Electric","product_slug":"modicon-m340-cpu-part-numbers-bmxp34","product_name":"Modicon M340 CPU (part numbers BMXP34*)","version_start":"All","version_start_inclusive":true,"version_end":"V3.30","version_end_inclusive":false,"cpe23_uri":"cve5:schneider-electric:modicon-m340-cpu-part-numbers-bmxp34:All:V3.30"},{"vendor_slug":"schneider-electric","vendor_name":"Schneider Electric","product_slug":"modicon-m580-cpu-part-numbers-bmep-and-bmeh","product_name":"Modicon M580 CPU (part numbers BMEP* and BMEH*)","version_start":"All","version_start_inclusive":true,"version_end":"V3.20","version_end_inclusive":false,"cpe23_uri":"cve5:schneider-electric:modicon-m580-cpu-part-numbers-bmep-and-bmeh:All:V3.20"},{"vendor_slug":"schneider-electric","vendor_name":"Schneider Electric","product_slug":"modicon-m580-cpu-safety-part-numbers-bmep58-s-and-bmeh58-s","product_name":"Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S)","version_start":"All Versions","version_start_inclusive":true,"version_end":"All Versions","version_end_inclusive":true,"cpe23_uri":"cve5:schneider-electric:modicon-m580-cpu-safety-part-numbers-bmep58-s-and-bmeh58-s:All Versions:All Versions"},{"vendor_slug":"schneider-electric","vendor_name":"Schneider Electric","product_slug":"modicon-mc80-bmkc80","product_name":"Modicon MC80 (BMKC80)","version_start":"All","version_start_inclusive":true,"version_end":"V1.6","version_end_inclusive":false,"cpe23_uri":"cve5:schneider-electric:modicon-mc80-bmkc80:All:V1.6"},{"vendor_slug":"schneider-electric","vendor_name":"Schneider Electric","product_slug":"modicon-momentum-cpu-171cbu","product_name":"Modicon Momentum CPU (171CBU*)","version_start":"All","version_start_inclusive":true,"version_end":"V2.3","version_end_inclusive":false,"cpe23_uri":"cve5:schneider-electric:modicon-momentum-cpu-171cbu:All:V2.3"}],"exploit_refs":[],"news":[],"references":[{"url":"https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-221-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2022-221-04-Modicon_Controllers_Ethernet_Modules_Security_Notification.pdf","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2023-02-01T00:00:00Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-06-24T00:31:38.771468Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:38.771468Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:38.771468Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:38.771468Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:38.771468Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:38.771468Z","label":"CVSS score revised","source":"vulnrichment"}]}